The correct answer is 2.51 m/s.
The principle of conservation of momentum states that an isolated system's total momentum will remain unchanged in the absence of an external force. In other words, momentum cannot be created or destroyed but can only be changed by the action of forces as they are described by Newton's laws of motion.
Momentum is the product of an item's mass and its speed, and it is also equivalent to the entire amount of force needed to bring an object to rest.
From the conservation of momentum,
[tex]m_1 u_1 + m_2 u_2 = ( m_1 + m_2 ) v[/tex]
Substitute the values, to get the required speed,
[ ( 0.45 ) ( 0 )] + [ ( 0.67 )([tex]u_2[/tex])] = ( 0.45 + 0.67 ) ( 1.5 )
[tex]u_2[/tex] = 2.51 m/s
To learn more about conservation of momentum refer the link:
https://brainly.com/question/3920210
#SPJ9
A wire having a mass per unit length of 0.500 g/cm carries a 2.00-A current horizontally to the south. What are (a) the direction
The direction of magnetic field is towards east.
We have a wire having a mass per unit length carrying 2A current horizontally to the south.
We have to determine the direction of magnetic field intensity.
What is Linear mass density ?The mass per unit length is called Linear mass density of any linear body. It is denoted by λ. Mathematically -
λ = m/L
According to the question, we have -
Direct your thumb in the direction of the current which is horizontally towards south and curl the remaining fingers. Now, advance in the direction of the current, you will notice that the direction of magnetic field is eastwards.
Hence, the direction of magnetic field is towards east.
To solve more questions on Estimating Direction of Magnetic Field, visit the link below-
https://brainly.com/question/13142185
#SPJ4
A particle with electric charge q moves along a straight line in a uniform electric field →E with speed u . The electric force exerted on the charge is qE . The velocity of the particle and the electric field are both in the x direction..(c) What If? If the particle starts from rest at x=0 at t=0 , how would you proceed to find the speed of the particle and its position at time t ?
A physical field called an electric field surrounds electrically charged particles and attracts or repels all other charged particles nearby. The physical field of a system of charged particles can also be referred to as the electric field.
In a uniform electric field E, a particle with electric charge q moves in a straight line. The speed of the particle is u.
The electric force exerted in the charge is qE.
The electric field and the velocity of the particle are both in the x direction.
Now,
The particle starts from rest i.e. x = 0 and t = 0.
We have the acceleration of the particle as:
a = (du/dt) = (qE/m) (( 1 - (u²/c²) )⁻³/²
Now,
du/ (( 1 - (u²/c²) )⁻³/² = (qE/m) t
Integrating the above equation with limits for x as 0 to u and for t as 0 to t.
We get,
u/(1 - (u²/c²))^{-1/2} = qEt/m
Therefore,
u = (qEct)/[√(m²c² + q²E²t²)]
For the position of the particle:
The position of the particle will be the integration of the speed of the particle in t = 0 to t = t.
Therefore,
x = ∫udt
x = qEc∫ tdt/(√(m²c² + q²E²t²) )
x = (c/qE) ( √(m²c² + q²E²t²) - mc)
Learn more about the electric field here:
https://brainly.com/question/14372859
#SPJ4
Object A has a mass of 100 kg, and Object B has a mass of 75 kg. Both objects are resting motionless on the ground.
Which statement describes the objects’ inertias?
Object A has a greater inertia than Object B.
Object B has a greater inertia than Object A.
Both objects have the same inertias.
Both objects have zero inertia.
The statement that describes the objects’ inertias is "Object A has a greater inertia than Object B.
What is Newton's first law of motion?
Newton's first law of motion, states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
This law is also called the law of inertia because it depends on mass of the object.
The greater the mass of an object, the more reluctant it will be to move.
Thus, the statement that describes the objects’ inertias is "Object A has a greater inertia than Object B.
Learn more about inertia here: https://brainly.com/question/1140505
#SPJ1
If a lightning occurred exactly 1 mile from your location, how many seconds will it take for the sound waves created by the thunder to reach your ears at 343 m/s?
Answer:
5 seconds
Explanation:
sound travels 1 km in roughly 3 secs so 1 mile in roughly 5 secs.
determine the values of mm and nn when the following charge of a proton is written in scientific notation: 0.000000000000000000160 cc . enter mm and nn , separated by commas.
The value of m = 1.6 and n = -19
What do you understand by charge?When there are more or fewer protons in an atom than electrons, the substance has an electric charge. While electrons have a negative charge, protons have a positive charge. If a substance has more protons than electrons, it is positively charged; if it has more electrons, it is negatively charged.
The ability to conduct electricity is a characteristic of many fundamental, or subatomic, components of matter. As an illustration, protons and neutrons both have positive charges but electrons have a negative charge.
given: [tex]q=0.000000000000000000160c[/tex]
Scientific notation of [tex]q= 1.6 X 10^{-19}[/tex]
now compare with the standard form [tex]m X 10^{n}[/tex]
we can say m = 1.6 and n = -19
To learn more about the charge, Visit : https://brainly.com/question/13291305
#SPJ4
The radius of the spherical ball is 4.32_+0.01m.what does it mean?
The estimated error rate for spherical volume measurements is 0.694%.Percent error is the difference between the estimated value and the actual value compared to the actual value, expressed as a percentage. So the percent error is the relative error multiplied by 100.
To calculate the Percent error
Subtract the actual value from the estimated value
Divide the result from step 1 by the actual value
to get the total percentage Multiply the result by 100
Formula,
Error Rate = ((Estimated Number – Actual Number)/Actual Number) x 100
from the given data
V=(4/3)πr3
=337.53cm³
so
((339.87-337.53)/337.53)x100
=0.694
So from the given data and substituting that data in the formula , the percentage error to estimate the measurement of the volume of the sphere is 0.694%.
Lear more about Volume here https://brainly.com/question/463363
#SPJ9
You are classifying an organism that is unfamiliar to you.
Which characteristic would be most helpful in identifying it?
A. energy source
B. behavior
C. structure
D. communication
O E. movement
Answer:
I know that we can identify it
Explanation:
C. structure
Answer:
C
Explanation:
In order to know what organism is it, you must obeserve its structure, behavior, movement but the most important is structure.
a body of mass m is projected at an angle θ with the horizontal with an initial velocity u. the average power of gravitational force over the whole time of flight is (a) mgu cosθ (b) 1 2 mg u cosθ (c) 1 2 mgu sinθ (d) zero
When the body of mass m is projected at angle θ, the displacement is horizontal to the earth's surface, but the force of gravity is perpendicular to the motion of the body.
Therefore, the gravitational force on the body is zero.
Work done will also be zero due to zero gravitational force.
Displacement can be defined as the shortest distance covered by the object or it is the change in the position of the object.
Therefore the average power i.e. P = (Work/Time) of gravitational force over the whole time of flight is zero.
Option (d) zero
To know more about displacement,
https://brainly.com/question/14288645
#SPJ4
The section of a longitudinal wave in which the particles are densely packed together
giving an area of high pressure is known as the
Answer:
compressions or refractions
Explanation:
The area of a typical eardrum is about 5.00 × 10⁻⁵m² .(b) How much energy is transferred to the eardrum exposed to this sound for 1.00 min?
The energy transferred to the eardrum which was exposed to the sound for 1.00 min is [tex]3 \times 10^{-3} J[/tex]
Given:
Threshold of hearing intensity = I = [tex]1[/tex] × [tex]10^-12W/m^2[/tex]
Area of the ear drum = A = [tex]5[/tex] × [tex]10^5m^2[/tex]
Incident power = P = IA
= [tex](1* 10^-12W/m^2(5 * 10^5m^2) =[/tex][tex]5[/tex] ×[tex]10^-17W[/tex]
For threshold of pain the intensity I = [tex]1.00W/m^2[/tex]
The incident power at the threshold of pain
P = [tex](5[/tex] × [tex]10^5m^2( 1.00W/m^2) =[/tex] [tex]5[/tex]× [tex]10^-5W[/tex]
b) Ear drum exposed to this sound t = 1.00min
= 60s
Energy transferred to ear drum is E = P × t
= [tex]5 \times 10^{-5} \times 60[/tex]
= [tex]3 \times 10^{-3}\;J[/tex]
Hence, [tex]3[/tex] ×[tex]10^-3 J[/tex] energy is transferred to the eardrum exposed to this sound for 1.00 min.
What do you mean by Energy?The capacity to perform work is known as energy in physics. Potential, kinetic, thermal, electrical, chemical, nuclear, and other types are all possible. As energy is transferred from one body to another, there is also heat and work. Energy is always categorized after it has been transferred based on its nature. As a result, heat transfer may result in thermal energy, whereas labor done may result in mechanical energy.
Motion is a common feature of all energy types. Whenever a body is in motion, for instance, it contains kinetic energy. Even while at rest, a tensioned object like a spring or bow has the ability to move; this is because of the configuration of the object, which carries potential energy. Nuclear energy is similar in that it has potential energy.
To know more about Energy visit:
https://brainly.com/question/1932868
#SPJ4
Your "weight" is properly defined as
Answer:
how heavy you are and how light you are
Explanation:
The sound level at a distance of 3.00m from a source is 120dB. At what distance is the sound level (b) 10.0 dB ?
The sound level at a distance of 3.00m from a source is 120dB at [tex]9.48*10^{5}\;m[/tex] distance is the sound level 10.0 dB
What do you mean by sound level?The RMS (root-mean-squared) of the sound pressure measured and averaged over a given length of time is the sound level in decibels. When measured by contemporary integrating sound level meters, measurements are often A-weighted to coincide with the human reaction; see the time-average sound level definition for more information. These measurements are now commonly referred to as the LA eq. Sound pressure is defined as having a sound level when it is compared to a reference sound pressure of 20 Pa using a standard exponential time weighting and a standard frequency weighting. The ratio of the base ten logarithms to the ratio of the sound level in decibels.
(Lw) = 10·log (W/Wo) dB
Given:
Sound level, [tex]Beta = 120\;dB[/tex]
Sound level, [tex]Beta_{a} = 10\;dB[/tex]
r = 3 m
[tex]P = 4\pi r^{2}I\;\;\;\;------equation(1)[/tex]
We know that,
[tex]\beta = 10 \times log(\frac{I}{I_{o} } )[/tex]
Where, [tex]I_{o}=1 \times 10^{-12}\;W/m^{2}[/tex]
Substitute the known value in the sound level equation,
[tex]10 = 10 \times log(\frac{I_{a} }{1 \times 10^{-12} } )[/tex]
[tex]1 = log(\frac{I_{a}}{1 \times 10^{-12} } )[/tex]
[tex]10= \frac{I_{a}}{1 \times 10^{-12} }[/tex]
[tex]I_{a}= 10 \times 1 \times 10^{-12}[/tex]
[tex]I_{a}=1 \times 10^{-11}\;W/m^{2}[/tex]
[tex]P = 4\pi r_{a} ^{2}x_{123} I_{a} \;\;\;\;------equation(2)[/tex]
equation(1) and (2) are equal,
[tex]4\pi r^{2}I = 4\pi r_{a} ^{2}x_{123} I_{a}[/tex]
Simplify the above equation,
[tex]r_{a} = \sqrt{(\frac{I}{I_{a} } )}\;\;r[/tex]
Substitute the known values in the above equation,
[tex]r_{a} = \sqrt{(\frac{1 \times 10^{-12} }{1 \times 10^{-11} } )}\;\times 3[/tex]
By solving the above equation, We get,
[tex]r_{a} = 9.48 \times 10^{5}\;m[/tex]
To learn more about sound level, Visit:
https://brainly.com/question/28226314
#SPJ4
A reconnaissance plane flies 629 km away
from its base at 218 m/s, then flies back to its
base at 327 m/s.
What is its average speed?
Answer in units of m/s.
Answer
A rectangular tank is filled with water to a depth of 4m. Calculate the pressure at the bottom of the tank. PLEASEEE HELP!!
The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculated using the hydrostatic equation:
P = ρgh
P = (1000 kg/m³)(9.8 m/s²)(4 m)
P = 39200 PaAnswer:
P = ρgh
P = (1000 kg/m³)(9.8 m/s²)(4 m)
P = 39200 Pa
Explanation:
In the case of the water stored in a tank, the pressure at its bottom is the weight acting on a unit area of the surface where the tank is kept. To turn that into an equation: Pressure = weight/area, and weight = mass (m) * acceleration due to gravity (g). This means pressure = m * g/ area
A 1520 kg car is rolling
down a frictionless
14.4° slope. What is
its acceleration?
Answer:
a = 2.44 m/s²
Explanation:
The Net force acting on the car downwards the plane will be equal to the component of the weight that is parallel to the plane.
Thus;
mg(sin θ) = ma
Thus;. g(sin θ) = a
g is acceleration due to gravity = 9.81 m/s²
θ = 14.4°
Thus;
9.81 × sin 14.4 = a
a = 2.44 m/s²
Answer:
2.44
Explanation:
If your on Acellus the correct answer is 2.44
What is ther atomic number of an element that has 2 electrons, 3 protons,
and 4 neutrons?
Answer:
9
Explanation:
A atomic number is the addition of every number
HELP PLS I CANT FIND THHE ANSWER ANYWHERE IM BEING TIMED TOO!!
Answer:
I think It's magna! Let me know if It's right.
What area of science compares and describes quantities and movements of matter and energy?.
Physics is the area of science that compares and describes quantities and movements of matter and energy. The correct option is option 2.
What is physics?Physics is the study of matter and energy in space and time, as well as their interactions. The interactions of particles and physical objects are governed by energy and the fundamental forces of nature. Science's study of matter, its motion through space and time, as well as related ideas like energy and force, is known as physics.
Therefore, the branch of science known as physics compares and describes the amounts and motions of matter and energy. The right choice is number two.
The complete question is given below:-
What area of science compares and describes quantities and movements of matter and energy?
1. earth science
2. physics
3. chemistry
4. biology
To know more about physics follow
https://brainly.com/question/14215609
#SPJ4
Which type of motor is shown below?
A.
AC motor
B.
brush motor
C.
DC motor
D.
magnetic motor
E.
split ring motor
Answer:
AC motor........A
Explanation:
Plato, an AC motor is much simpler than a DC motor. As alternating current passes through the coil, it becomes magnetized. Since the current is alternating, the north and south ends keep switching.
Answer:
magnetic
Explanation:
PLATO
The freezing point of water is a (physical/chemical) property. The ability of oxygen to react with iron to cause rust is a (physical/chemical) property.
The freezing Point of water is a physical property
The ability of oxygen to react with iron to cause rust is chemical property
Explanation:
What does someone with low self esteem look like
They feel they are, overall, bad people without any particular skills or value, when they are not.
I hope this helps you
God bless and have an awesome weekend
:)
Owen and Dina are at rest in frame S' , which is moving at 0.600 c with respect to frame S . They play a game of catch while Ed , at rest in frame S , watches the action (Fig. P39.75). Owen throws the ball to Dina at 0.800 c (according to Owen), and their separation (measured in S' ) is equal to 1.80 × 10¹²m .(b) According to Dina, what time interval is required for the ball to reach her? According to Ed.
The total time taken by the ball to reach Dina is 7.5 × 10³ s.
A frame of reference is a set of reference points—geometric points whose positions are known mathematically and physically—that define the origin, orientation, and scale of an abstract coordinate system.
If a body does not continuously adjust its position in relation to its environment throughout the course of time, it is said to be at rest.
In the frame S', Dina and Owen are at rest.
The speed of the ball with respect to Owen, u =0.800c
The speed of the frame S' with respect to frame S, v = 0.600c
Distance between Dina and Owen, L(p) = 1.8 × 10¹² m
Speed of light, c = 3 × 10⁸ m/s
Therefore, the ball reaches Dina in time:
t = L(p) / u
t = 1.8 × 10¹² m / 0.8c
t = 1.8 × 10¹² m /(0.8)(3 × 10⁸ m/s)
t = 7.5 × 10³ s
Learn more about the frame of reference here:
https://brainly.com/question/10962551
#SPJ4
Which statements describe a situation in which work is being done? Check all that apply.
What is the difference between a neutralization reaction and a double-displacement reaction? (1 point) Double-displacement reactions are always redox reactions. Double-displacement reactions always involve acids and bases. Neutralization reactions always produce water and a salt. Neutralization reactions are always combustion reactions.
Answer:
Neutralization reactions always produce water and a salt.
Explanation:
There are different types of chemical reactions that occurs. Two of them are neutralization and double-displacement reaction. Neutralization reaction is the reaction between an acid and a base to give an acid salt and water as products. For example:
2NaOH (base) + H2SO4 (acid) → Na2SO4 (salt) + 2H2O (water)
On the other hand, Double displacement reaction is the reaction that involves an ion exchange between the reactants to form new products. This ionic exchange occurs in such a way that two reactants form two new products. For example:
2NaCl + Ca(NO3)2 → CaCl2 + 2NaNO3
Therefore, the major difference between these two types of reactions is that: NEUTRALIZATION MUST ALWAYS PRODUCE WATER AND SALT AS PRODUCTS.
What can be said about this magnetic field illustration?
A. Magnetic repulsion Is evidernt.
B. The magnetic fleld is weakest in the center of the magnets.
C. The magnetic flow is from north to south within the magnet.
D. The magnetic fleld flows from the north pole of one magnet to the south pole of the other magnet.
E. The magnetic field is weakest at the poles of the magnets.
Answer:
Magnetic repulsion Is evidernt.
Answer:
The magnetic field flows from the north pole of one magnet to the south pole of the other magnet.
Plato :)
Which could be an example of an unbalanced force?
A. A plate sitting on a dining room table.
B. Earth orbiting the Sun
C. A ball at the top of a hill that is not moving.
D. A baseball that has been thrown to home plate.
Answer:i think its D
Explanation:
If a cannonball were launched with a speed of 35m/s at a 50° angle from the height of 0m, what would be the cannonball's range?
The range of a cannonball launched with a speed of 35 m/s at an angle of 50 would be 119.1 meters.
The launching of a cannonball is a case of projectile motion.
The formula for the range(R) of a projectile is
R = 2 u² sin(θ) cos(θ)/g
Here,
u = initial speed with which the projectile is launched = 35 m/s
θ = Angle at which projectile is launched = 50°
R = 2 (35)² sin(50) cos(50)/ 9.8
R = 2 x 1225 x 0.76 x 0.64/9.8
R = 119.1 m
Thus, The range of a cannonball launched with a speed of 35 m/s at an angle of 50 would be 119.1 meters.
Read more about Projectile motion:
https://brainly.com/question/28645959
#SPJ1
5. Whether you are standing, running or jumping Earth is exerting a gravitational force on you. This gravitational force is called an object's weight (W). Knowing this you can find the weight of an object if you know the mass because the acceleration will be 9.8 m/s2 due to gravities pull on the object. The equation to use then is: W = mass x acceleration. What is the weight of a 53 kg man?
Answer:
How we know, the equation is:
W = mg
Replacing according our data:
W = 53 kg × 9,8 m/s^2
Resolving:
W = 519,4 N
The weight of the object is of 519,4 Newtons.
Need help understanding this I dont get it , someone help me understand it please
chang wants to build a circuit that will light up a bulb from a flashlight, and has a battery, switch, wire, and a light bulb.
The component that Chang could leave out and still be able to light up the bub is the switch.
What is a switch?The electric circuit refers to a path that is created for the flow of current. We know that current is the movement of electrons. When we connect a circuit, a proper conduit has been set up so that electrons can pass through.
In this case, we have been told that Chang wants to build a circuit that will light up a bulb from a flashlight, and has a battery, switch, wire, and a light bulb.
The component that Chang could leave out and still be able to light up the bub is the switch.
Learn more about circuit:https://brainly.com/question/23321733
#SPJ1
Missing parts;
Chang wants to build a circuit that will light up the bulb from a flashlight. Which component could Chang leave out and still light up the bulb? the switch the battery the wire the light bulb
Answer:
A) the battery
Explanation: