Answer:
60
Explanation:
i think it 60 because u plus 25 +30=55+5=60
Consider this situation: A person stands at rest on the floor.
Identify the forces that act upon the person.
Answer:
Explanation:
Gravity and normal
Answer:
Gravity and Normal
What is the acceleration of a 1,125 kg truck with a net force of 8,268 N?
Answer:
The answer is 7.35 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
where
f is the force
m is the mass
From the question
f = 8268 N
m = 1125 kg
We have
[tex]a = \frac{8268}{1125} \\ =7.3493 3333...[/tex]
We have the final answer as
7.35 m/s²Hope this helps you
Which exoplanet has the most Earth-like orbit?
Answer: Kepler-452b
I think
hope it helps
ANSWERED: Which action will cause the induced current to decrease or remain constant?
*zoom in answer to remove computer lines*
Answer:
Reversing the polarity of the magnet
Explanation:
The action that will cause the induced current to decrease or remain constant is "reversing the polarity of the magnet"
To reverse the polarity, a battery and coil of copper can be used. Reversing the polarity of the magnet will also cause the induced current to reverse in direction. The polarity of the magnet actually determines the direction of the electromagnetic force.
Strontium has neutrons
Answer:
strontium has 50 neutrons
Answer:
the answer is 50 hope it helps =)
Explanation:
Explain why moving a heavy box on a wheeled cart is easier than pushing it across the floor
Answer:
because pushing it the mass is sitting steal when pushing the mass and no choice but to move
Please solve step by syep
Answer:
0.258 +- 0.0162
Explanation:
First change the uncertainty to percentage uncertainty :
%uncertainty =uncertainty /estimated value *100
0.1/51.6 * 100=0.19%
Do the same for the rest you will get:
0.1%, 1%, 5%
Then add the %uncertainties
0.19% + 0.1% + 1% +5%=6.29%
Find density:
51.6/10 * 100 * 0.20 = 0.258
Change the %percentage uncertainty to absolute uncertainty :
Absolute uncertainty = %uncertainty * the answer
6.29/100 * 0.258 = 0.0162
Answer = 0.258 +- 0.0162
After rounding:
0.26 +- 0.02
A coconut falls from a height of 18m to the ground. What is the velocity at which the coconut hits the ground?
[Given g = 10m/s]
Answer:
v=18.97 m/s
Explanation:
the equation for the above question is v²=u²+2as
giving brainlist What is ONE modern example OR historical example of a country that had representative government
Answer:
Canada
Explanation:
what is the probability that a measurement of the energy at time t will yield the result h^2pi^2/2ml^2
Answer:
The probability is [tex]\dfrac{1}{2}[/tex]
Explanation:
Given that,
The energy at time t will yield the result [tex]h^2pi^2/2ml^2[/tex]
Suppose, At time t = 0 the normalized wave function for a particle of mass m in the one-dimensional infinite well is given by,
[tex]V(x)={0 0<x<L,\ \infty\ elsewhere[/tex]
The normalized wave function is,
[tex]\psi(x)=\dfrac{1+i}{2}\sqrt{\dfrac{2}{L}}\sin\dfrac{\pi x}{L}+\dfrac{1}{\sqrt{2}}\sqrt{\dfrac{2}{L}}\sin\dfrac{2\pi x}{L}\ 0<x<L, 0\ elsewhere[/tex]
What is the probability that a measurement of the energy at time t will yield the result h^2 pi^2/2mL^2?
We need to find the probability
Using given data
[tex]probability=(\dfrac{1+i}{2})(\dfrac{1-i}{2})[/tex]
[tex]probability=\dfrac{1-i^2}{4}[/tex]
[tex]probability=\dfrac{1+1}{4}[/tex]
[tex]probability=\dfrac{1}{2}[/tex]
Hence, The probability is [tex]\dfrac{1}{2}[/tex]
Which of the following motion dots represent an object undergoing free-fall in a vacuum?
A. A
B. B
C. C
SYW A force of 175 N is needed to keep a stationary engine of weight 640 N on wooden skids from
sliding on a wooden floor. What is the mass of the engine?
Select one:
Answer:
phle follow karo yrr tab hee bat u ga
Answer:
no
Explanation:
ok
1) How many people can be on a basketball team?
2) How many people can be on the court at a time?
3) List the dimensions of the court listed in the video (Length and Width)
4) How many points does a freethrow count for?
5) How many seconds does a team get to shoot the ball before a shot clock violation?
Answer:
it can be up to 15 ppl
ur team can be on a court
width
28 I believe
less then 10 seonds
An object is made from a material that is hard, shiny, and can be hammered into thin sheets. Which of these is another likely property of the material?
Answer:
Good conductor of heat
Explanation:
Because metals are shiny, ductile, malleable, sonorous, good conductors of heat and electricity and have high melting and boiling points
Answer: mine is different so im sorry im here for points
Explanation:
Two vectors are given by a = 8.6i + 5.1 j and b = 931 + 9.5.
Find
(a). [a xb]
(b). a.b ,
(c) a + b . b , and
(d) the component of a along the direction of b.
Answer:
Assuming b = 9.3i + 9.5j (b = 931 + 9.5 is wrong):
a) a×b = 34.27k
b) a·b = 128.43
c) (a + b)·b = 305.17
d) The component of a along the direction of b = 9.66
Explanation:
Assuming b = 9.3i + 9.5j (b = 931 + 9.5 is wrong) we can proceed as follows:
a) The vectorial product, a×b is:
[tex] a \times b = (8.6*9.5 - 5.1*9.3)k = 34.27k [/tex]
b) The escalar product a·b is:
[tex] a\cdot b = (8.6*9.3) + (5.1*9.5) = 128.43 [/tex]
c) Asumming (a + b)·b instead a+b·b we have:
[tex](a + b)\cdot b = [(8.6 + 9.3)i + (5.1 + 9.5)j]\cdot (9.3i + 9.5j) = (17.9i + 14.6j)\cdot (9.3i + 9.5j) = 305.17[/tex]
d) The component of a along the direction of b is:
[tex] a*cos(\theta) = \frac{a\cdot b}{|b|} = \frac{128.43}{\sqrt{9.3^{2} + 9.5^{2}}} = 9.66 [/tex]
I hope it helps you!
Data Table 2: Distance from the Sun
Planet Name
Distance from Sun (m)
Saturn
1
1.43 x 102
Jupiter
7.79 x 101
Mars
2.28 x 10"
Neptune
4.50 x 102
1. What is the gravitational force between the Sun and each of the 4 planets listed from
the solar system?
Answer:
hfwf2f2f2ff2fefwgwfe
Mishael walks 30 meters East, turns around and walks 25 meters West, then turns again and walks 50 meters East. What is his displacement? Group of answer choices 5 meters East 105 meters East 5 meters West 55 meters East
Answer:
55 meters East
Explanation:
if you start at the origin, "add" 30 meters (going east #1), subtract 25 meters (going west #1), then add 50 meters (going east #2), you should get 55 meters East.
Hope this helps!
Gravity causes objects to be attracted to one another. This attraction keeps our feet firmly planted on the ground and causes the moon to orbit the earth. The force of gravitational attraction is represented by the equation F=Gm1m2r2, where F is the magnitude of the gravitational attraction on either body, m1 and m2 are the masses of the bodies, rrr is the distance between them, and G is the gravitational constant. In SI units, the units of force are kg⋅m/s2, the units of mass are kg, and the units of distance are mm. For this equation to have consistent units, the units of G must be which of the following?
A. kg3m⋅s2
B. kg⋅s2m3
C. m3kg⋅s2
D. mkg⋅s2
Answer:
C m³/kgs²
Explanation:
From the question, we know that
F = Gm1m2/R², where
F = the Force of gravity in N.
G = gravitational constant, in Nm²/kg²
m1 = mass in kg
m2 = mass in kg
R = distance between the objects in m
Now, if we substitute the units of each in the formula, we have
N = G * (kg * kg) / m²
N = G (kg²) / m²
Nm² = G kg², remember, N itself is kgm/s², so we substitute for that
Kgm/s² * m² = G kg²
Kgm³/s² = G kg²
G = (kgm³/s²) / kg²
G = m³/kgs²
And that's our answer
a box is at rest and a force of 250N is applied to it.If the frictional force is 200N determine the net force
Answer:
50N
Explanation:
the net force is the addition of all forces in an object.
The frictional force is the opposite of the applied force, so:
Nf(net force)= 250(applied force)-200(frictional force)
so Nf=50N
Given the vector A with components Ax = 2.00, Ay = 6.00, the vector B with components Bx = 2.00, By = 22.00, and the vector D = A - B, calculate the magnitude and angel with the x axis of the vector D
Answer:
The magnitude of vector d is 16 and the angle with the x-axis is 270°
Explanation:
Operations With Vectors
Given two vectors in rectangular components:
[tex]\vec a=(ax,ay)\ ,\ \vec b=(bx,by)[/tex]
The sum of the vectors is:
[tex]\vec a+\vec b=(ax+bx,ay+by)[/tex]
The difference between the vectors is:
[tex]\vec a-\vec b=(ax-bx,ay-by)[/tex]
The magnitude of [tex]\vec a[/tex] is:
[tex]|\vec a|=\sqrt{ax^2+ay^2}[/tex]
The angle [tex]\vec a[/tex] makes with the horizontal positive direction is:
[tex]\displaystyle \tan\theta=\frac{ay}{ax}\\[/tex]
The question provides the vectors:
[tex]\vec a=(2,6)[/tex]
[tex]\vec b=(2,22)[/tex]
[tex]\vec d=\vec a-\vec b[/tex]
Calculate:
[tex]\vec d=(2,6)-(2,22)=(0,-16)[/tex]
The magnitude of [tex]\vec d[/tex] is:
[tex]|\vec d|=\sqrt{0^2+(-16)^2}=\sqrt{0+256}=16[/tex]
The angle is calculated by:
[tex]\displaystyle \tan\theta=\frac{-16}{0}[/tex]
The division cannot be calculated because the denominator is zero. We need to estimate the correct angle by looking at the components of the vector. Since the x-coordinate is zero and the y-coordinate is negative, the vector points downwards (south), thus the angle must be -90° or 270° if the range goes from 0° to 360°.
The magnitude of vector d is 16 and the angle with the x-axis is 270°
True or False: When analyzing surface forces, the pressure always acts away from the control volume. g
Consider a air-filled parallel-plate capacitor with plates of length 8 cm, width 5.52 cm, spaced a distance 1.99 cm apart. Now imagine that a dielectric slab with dielectric constant 2.6 is inserted a length 4.4 cm into the capacitor. The slab has the same width as the plates. The capacitor is completely filled with dielectric material down to a length of 4.4 cm. A battery is connected to the plates so that they are at a constant potential 0.8 V while the dielectric is inserted.
Required:
What is the ratio of the new potential energy to the potential energy before the insertion of the dielectric?
Answer:
The ratio of the new potential energy to the potential energy before the insertion of the dielectric is 0.58
Explanation:
Given that,
Length of plates = 8 cm
Width = 5.52 cm
Distance = 1.99 cm
Dielectric constant = 2.6
Length = 4.4 cm
Potential = 0.8 V
We need to calculate the initial capacitance
Using formula of capacitance
[tex]C=\dfrac{\epsilon_{0}A}{d}[/tex]
Put the value into the formula
[tex]C=\dfrac{8.85\times10^{-12}\times8\times5.52\times10^{-4}}{1.99\times10^{-2}}[/tex]
[tex]C=1.96\times10^{-12}[/tex]
We need to calculate the final capacitance
Using formula of capacitance
[tex]C'=\dfrac{\epsilon_{0}A_{1}}{d}+\dfrac{k\epsilon_{0}A_{2}}{d}[/tex]
Put the value into the formula
[tex]C'=(\dfrac{8.85\times10^{-12}}{1.99\times10^{-2}})((4.4\times5.52)+(3.6\times5.52)2.6)\times10^{-4}[/tex]
[tex]C'=3.37\times10^{-12}[/tex]
We need to calculate the ratio of the new potential energy to the potential energy before the insertion of the dielectric
Using formula of energy
[tex]\dfrac{E}{E'}=\dfrac{\dfrac{1}{2}CV^2}{\dfrac{1}{2}C'V^2}[/tex]
Put the value into the formula
[tex]\dfrac{E}{E'}=\dfrac{1.96\times10^{-12}}{3.37\times10^{-12}}[/tex]
[tex]\dfrac{E}{E'}=0.58[/tex]
Hence, The ratio of the new potential energy to the potential energy before the insertion of the dielectric is 0.58
6. What is the formula for calculating the average velocity of a moving object?
9. Average velocity = Ad + ar
b. Average velocity = Ad/AT
c. Average velocity At Ad
d. Average velocity - Adan
Answer: A/ average velocity=d/t
Explanation:
The average velocity is the displacement divided by change in time Thus it can be written as Ad/At. Hence, option b is correct.
What is velocity?Velocity of an object is the rate of change of speed of that object. Mathematically it is the ratio of total displacement to the time taken to travel.
Velocity = Displacement/time.
Let a body travelling a distance within a time t have an initial velocity and then changes to a new final velocity then, the measure of net velocity is called its average velocity.
Suppose v1 be the initial velocity and v2 be the final velocity to move a distance d at a time t, then the average velocity is written as follows:
v2 - v1 = d/t.
Therefore, average velocity is written in terms of average distance travelled and change in time thus, option b is correct.
To find more about velocity, refer the link below:
https://brainly.com/question/18084516
#SPJ2
You are a member of a geological team in Central Africa. Your team comes upon a wide river that is flowing east. You must determine the width of the river and the current speed (the speed of the water relative to the earth). You have a small boat with an outboard motor. By measuring the time it takes to cross a pond where the water isn’t flowing, you have calibrated the throttle settings to the speed of the boat in still water. You set the throttle so that the speed of the boat relative to the river is a constant 6.00 m/s. Traveling due north across the river, you reach the opposite bank in 20.1s. For the return trip, you change the throttle setting so that the speed of the boat relative to the water is 9.00 m/s. You travel due south from one bank to the other and cross the river in 11.2 s.
Required:
a. How wide is the river, and what is the current speed?
b. With the throttle set so that the speed of the boat relative to the water is 6.00 m/s, what is the shortest time in which you could cross the river, and where on the far bank would you land?
Answer:
(a). The width of the river is 90.5 m.
The current speed of the river is 3.96 m.
(b). The shortest time is 15.0 sec and we would end 59.4 m east of our starting point.
Explanation:
Given that,
Constant speed = 6.00 m/s
Time = 20.1 sec
Speed = 9.00 m/s
Time = 11.2 sec
We need to write a equation for to travel due north across the river,
Using equation for north
[tex]v^2-c^2=\dfrac{w^2}{t^2}[/tex]
Put the value in the equation
[tex]6.00^2-c^2=\dfrac{w^2}{(20.1)^2}[/tex]
[tex] 36-c^2=\dfrac{w^2}{404.01}[/tex]....(I)
We need to write a equation for to travel due south across the river,
Using equation for south
[tex]v^2-c^2=\dfrac{w^2}{t^2}[/tex]
Put the value in the equation
[tex]9.00^2-c^2=\dfrac{w^2}{(11.2)^2}[/tex]
[tex] 81-c^2=\dfrac{w^2}{125.44}[/tex]....(II)
(a). We need to calculate the wide of the river
Using equation (I) and (II)
[tex]45=\dfrac{w^2}{125.44}-\dfrac{w^2}{404.01}[/tex]
[tex]45=w^2(0.00549)[/tex]
[tex]w^2=\dfrac{45}{0.00549}[/tex]
[tex]w=\sqrt{\dfrac{45}{0.00549}}[/tex]
[tex]w=90.5[/tex]
We need to calculate the current speed
Using equation (I)
[tex]36-c^2=\dfrac{(90.5)^2}{(20.1)^2}[/tex]
[tex]36-c^2=20.27[/tex]
[tex]c^2=20.27-36[/tex]
[tex]c=\sqrt{15.73}[/tex]
[tex]c=3.96\ m/s[/tex]
(b). We need to calculate the shortest time
Using formula of time
[tex]t=\dfrac{d}{v}[/tex]
[tex]t=\dfrac{90.5}{6}[/tex]
[tex]t=15.0\ sec[/tex]
We need to calculate the distance
Using formula of distance
[tex]d=vt[/tex]
[tex]d=3.96\times15.0[/tex]
[tex]d=59.4\ m[/tex]
Hence, (a). The width of the river is 90.5 m.
The current speed of the river is 3.96 m.
(b). The shortest time is 15.0 sec and we would end 59.4 m east of our starting point.
A capacitor is made up by placing two metal plates of surface area (6.000x10^-6)
m^2 and separated a distance (5.0000x10^-4) m. Between the plates you use a
dielectric of dielectric constant (2.00x10^0). Find the energy stored in this capacitor
when connected to a (2.0000x10^0) V battery, using scientific notation, with 3
significant figures.Note: Your answer is assumed to be reduced to the highest power possible.
Answer: You should not cheat during tests
Explanation: This is your professor.
Mr. Jorge Millan O.
3. A stuntman jumps off a building (into a safety mat). If he falls for 5 seconds, what
will his velocity be right before he hits the mat? (please include direction)
Givens (include all variables and units. Ex. vi=5m/s, d=60miles)

The integral with respect to time of a force applied to an object is a measure called impulse, and the impulse applied to an object during a time interval determines its change in momentum during the time interval. The safety of a t-shirt launcher, used to help get crowds cheering at baseball games, is being evaluated. As a first step in the evaluation, engineers consider the design momentum of the launched t-shirts. The springs in the launcher are designed to apply a variable force to a t-shirt over a time interval of t1 = 0.5 s. The force as a function of time is given by F(t) = ať+ b, where a = –28 N/s2 and b = 7.0 N. The momentum of the t-shirt will be its initial momentum (po 0) plus its change in momentum due to the applied impulse: pf = po+SET+ F(t) dt. By applying the given time dependent function for F(t) and performing the integration, which of the following is the correct expression for Pf?
a) tl tl Pf= 0++)16
b) 0+*+*+b)
c) 0+++bt) 0++) ti
Answer:
Follows are the solution to this question:
Explanation:
By checking the value in which we have calculated by performing its differentiation of [tex]\frac{a}{3}t^3+bt[/tex], the correct form of its integer value is calculating with regard to t, that also provides as expected [tex]at^2+b = F(t)[/tex].
A boat is going upstream at a force of 50N East and a current, on the stream, is moving West
at 37N. What is the force acting on the boat?
Answer:
23N
Explanation:
50-37 = 23
Why should I not choose you?
Answer:
bc I'm ugly
Explanation:
i just answer a random thing bc I know is not from school
Answer:
you shouldn't, if u were to choose me then you would be making a huge mistake since choosing me would go against why you shouldn't choose me.
Which television show (non-sporting event) had the highest television ratings in the last year?
Source