Answer:
The drag force is [tex]D = 40.15 \ N[/tex]
Explanation:
From the question we are told that
The mass is [tex]m = 450.0 \ kg[/tex]
The acceleration [tex]a = 0.133 m/s^2[/tex]
The force due to the motor is [tex]F_m = 100 \ N[/tex]
Generally the net force acting on the boat is mathematically represented as
[tex]F = m * a[/tex]
=> [tex]F = 450.0 * 0.1330[/tex]
=> [tex]F = 59.85 \ N[/tex]
Generally the drag force acting on the boat is mathematically represented as
[tex]D = F_m -F[/tex]
=> [tex]D = 100 - 59.85[/tex]
=> [tex]D = 40.15 \ N[/tex]
What is happening to the heat in freezing?
Answer:
Heat is released.
Explanation:
Freezing is almost always an exothermic process, meaning that as liquid changes into solid, heat and pressure are released. This is often seen as counter-intuitive, since the temperature of the material does not rise during freezing, except if the liquid were supercooled.
When does air become turbulent around a thrown ball?
A. On the smooth side of a ball
B. On the rough side of a ball
C. On the right side of a ball
Answer: B (on the rough side)
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Air will become turbulent around a thrown ball on the rough side of the ball because it will cause the air waves to be irregular. Option B is the right answer.
When an object is moving in air, it moves smoothly if the shape is streamlined and the body of the object is smooth.
An object will experience turbulence when the air waves are violent and are irregular.
Therefore, air will become turbulent around a thrown ball on the rough side of the ball because it will cause the air waves to be irregular.
The correct answer is option B.
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Jane measures a piece of metal and determines it has a mass of 10 grams and a volume of 2 mL. What is the density of the piece of metal?
Answer: 5g/ml
Explanation:
what is the volume of a bar of soap that is 9 cm long, 5 cm wide, and 2 cm high?
Answer:
90cm
Explanation:
2x5=10
10x9=90
Answer:
90 cm
Explanation:
To find volume, the formula is V=LWH
L is the length, W is the width and H is the height:
9 x 5 x 2 = 90
So V = 90 cm
Hope this helps you out! : )
if the speed is 343 m/s and the wavelength is 10m than what is the frequency?
what is accelaration
Answer:
it like too gain speed like a car
One difference in the formation of the small solid planets and the larger gaseous planets is that the gaseous planets formed
A) much closer to the Sun.
B) beyond the frost line in the nebula.
C) from condensed metals in the outer nebula.
D) as a result of icy individual nebula in space.
B) beyond the frost line in the nebula.
A scientific theory is a hypothesis supported by many experiments
True or False
Answer:
I believe it is True... I hope it is correct :)
Explanation:
Answer : False
Explanation :
7. For any given motion, the distance is
Answer:
For any given motion, the distance is
Explanation:
Explanation:
Given:
v₀ = 5.0 m/s
a = 2.5 m/s²
Equation:
Δx = v₀ t + ½ at²
Δx = (5.0 m/s) t + ½ (2.5 m/s²) t²
Δx = 5t + 1.25t²
Make a table of data using 1.0 increments for t.
Graph the data. See included image.
Use Hooke's Law and Newton's 2nd Law to derive a formula for the acceleration of an object of mass m on a frictionless surface which is attached to a spring with a constant k which is stretched a distance L. The acceleration should be in terms of m, k, and L.
Answer:
a = kL/m
Explanation:
Here we can use Hooke's Law to find out the force applied on the system. Hooke's Law states that when a spring is stretched by some force, the force applied is directly proportional to the displacement of spring. The formula is given as:
F = kL
Now, the Newton's Second Law of motion states that whenever an unbalanced force is applied to a body it produces an acceleration in the body, in its own direction. So, the force is given by the formula:
F = ma
Comparing both the forces, we get:
kL = ma
a = kL/m
which sentence describe newton's third law?
A. the acceleration of an object is equal to the net of force divided by the mass of an object
B. for an object to slow down or speed up the forces acting on it must be unbalanced
C. forces always comes in pairs that act in opposite directions
D. an object that is moving at a constant speed and in a straight line is experiencing balanced forces
Answer:
C. Forces always comes in pairs that act in opposite directions
Explanation:
I got it right when I chose it.
Answer:
c
Explanation:
it's correct trust me
Explain how a car moving around a traffic island at a steady speed of 20 mph is constantly accelerating.
When converting from kilometers to meters, the decimal is moved
a. three places to the left
b. two places to the left
three places to the right
d. two places to the right.
C.
B
Please select the best answer from the choices provided
Ο Α
B
D
Answer:
a
Explanation:
Answer:
You're best answer to your question would be C!!!
A tunnel has a length of 50 km. A car takes 20 min to travel between the two ends of the tunnel. What is the average speed of the car
Answer:
150 km/h
Explanation:
50km/20min = x km/60 min
The ovaries in females and the testes in males are part of the
Answer:
Gonads
Explanation:
The gonads, the primary reproductive organs, are the testes in the male and the ovaries in the female. These organs are responsible for producing the sperm and ova, but they also secrete hormones and are considered to be endocrine glands.
Hope this helps :)
How many significant figures are in 0.0069
Answer:
2
Explanation:
What is the magnitude of the total displacement of the school bus from the start to the end of its trip?
Answer:
With the given information, we can assume that the start and the end of the trip are the same place. (Suppose, a tour where the bus starts at the school, then it goes to a given location, and then it returns to the school)
Now, the definition of displacement is:
The difference between the final position and the initial position.
But if the start and the end of the trip are the same place, then the initial and final position must be the same. Then the difference between the final position and the initial position is zero.
This means that the displacement of the school bus from the start to the end of its trip must be zero.
a physics teacher walks at a very constant and amazing velocity of 2 m/s. a sneaky and disgruntled student stands on top of a 20m building and plans to drop the balloon on the head of the caring and genuine 2m tall physics teacher below how far should the amazing teacher be from the impact point when the disingenuous student releases the balloon of fury?
Answer:
18m
Explanation:
The student should be 18m away from the teacher
The sound of frequency greater than 20,000 Hz is called ....
20,000 112 से अधिक आवृति की ध्वनि
कहा जाता है।
Positive electrode is called
घनात्मक इलेक्ट्रोड को
कहते हैं।
d.
Answer:
ultra sound... follow me
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Which of these is an accurate statement about the strength of the force of gravity?
(1 Point)
It is strong distance force.
It is the strongest known force in the universe.
It does not exist in outer space.
It is relatively weak distance force.
i was wrong sorry
Explanation:
Answer:
it is relatively weak distance Force
ordered from strongest to weakest the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity
What is the chemical symbol for C6H12O6
Hydrogen bonds are weaker than the bond that holds hydrogen to oxygen in a
water molecule.
A. True
B. False
Answer:
Your answer is false
Explanation:
A laboratory experiment requires 1300 milligrams of sugar. How many kilograms of sugar does the experiment require?
Answer:
The answer is 0.0013.
Explanation:
The answer is 0.0013 becuase the number is even and you have to divide it by ten if it is milligrams to kilograms so basically always divide by tens. Hope this is helpful <3
The experiment requires 0.0013 kg of sugar.
How conversion of milligram to kilogram is done?The milligram is the mass = 1/1,000 of gram (or) 0.0154 grains.
The milligram is an SI unit of weight where as kilogram is also a unit of weight in the metric system.In the metric system, " milli " is the prefix for 10⁻³ and " kilo " is the prefix of 10³.Abbreviation of mg - milligram, kg - kilogram.For example, 50 milligram is 50 mg and 50 kilogram is 50kg.kilograms = milligrams ÷ 1,000,000
The weight in kilograms is equal to the milligrams divided by 1,000,000.
Here,
1300 mg = ( 1300 ÷ 1,000,000) = 0.0013 kg
Hence, the answer is 0.0013 kg.
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how does speed affect the amount of kinetic energy an object has?
Answer:
The faster an object moves, the more kinetic energy it has. The more mass an object has, the more kinetic energy it has
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How many joules of potential energy does the pendulum have when it has 100 J of kinetic energy?
Answer: The maximum kinetic energy is 100 j.
Explanation: The kinetic energy = (potential energy) + (kinetic energy) and the potential energy of 0 J implying its kinetic energy is 100 J, which is its maximum.
If the maximum kinetic energy of the pendulum is 100 J, then the maximum potential energy of the pendulum will be 100 J as well.
The given parameters;
Kinetic energy of the pendulum = 100 JBased on the principles of conservation of mechanical energy, energy is always conserved.
If the maximum kinetic energy of the pendulum is 100 J, then its maximum potential energy will be 100 J as well.
M.A = K.E + P.E
where;
K.E is the kinetic energy P.E is the potential energyAt the lowest displacement of the pendulum;
M.A = K.E + 0
M.A = K.E = 100 J
At maximum displacement of the pendulum;
M.A = 0 + P.E
M.A = P.E = 100 J
Thus, if the maximum kinetic energy of the pendulum is 100 J, then the maximum potential energy of the pendulum will be 100 J as well.
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Which of the following statement is not true regarding liquid pressure?
liquid pressure increases as the height of liquid column increases.
liquid pressure increases with increase in density of the liquid
liquid pressure at same depth is same
liquid pressure is not affected by acceleration due to gravity
Heart rate refers to the number of times your heart beats in one minute
True
False
Answer:
true
Explanation:
Answer:
true
Explanation:
A car is traveling 24.8 m/s and speeds up to 26.8 m/s in 4.3 seconds. What is the car's average acceleration during this time?
≈ 0.47 m/s²
Explanation:Hi there !
Acceleration formula
a = (v₂ - v₁)/t
a = (26.8m/s - 24.8m/s)/4.3s
= (2m/s)/4.3s
≈ 0.47 m/s²
Good luck !
A wave traveling at 50.0 m/s has a wavelength of 10.0 m. What is the frequency of the wave? Show your work below?
Answer:
The frequency of the wave is 5 Hz
Explanation:
Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).
Frequency is the number of vibrations that occur in a unit of time. Its unit is s – 1 or hertz (Hz).
The propagation velocity is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave disturbance propagates along its displacement. Relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation: v = f * λ.
In this case:
v= 50 [tex]\frac{m}{s}[/tex]f=?λ= 10 mReplacing:
50 [tex]\frac{m}{s}[/tex] = f* 10 m
Solving:
[tex]f=\frac{50 \frac{m}{s} }{10 m}[/tex]
f=5 Hz
The frequency of the wave is 5 Hz
What inertia is present in a stretched rubber?
Answer:
You input potential energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this is kind of potential energy is specifically called elastic potential energy.
The inertia in the stretched rubber will be potential energy, i.e., elastic potential energy.
What is inertia?Law of inertia:
Newton's First Law of Motion (Inertia) is an object at rest remains at rest, an object in motion remains in motion at constant speed through straight line unless acted by an unbalanced force.
Moment of inertia:
The sum of the product of mass of each particle with the square of its distance from the axis of the rotation is known as inertia or the moment of inertia.
Formula of Moment of Inertia I = Σ miri².
The three types of inertia are as follows:
Inertia of Rest.Inertia of motion.Inertia of Direction.Inertia is the result of conservation of energy.
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