3 years ago

Forces that affect objects without touching them are called field forces. Is gravity a field force? Explain.

1 answer:

3 0

Yes, gravity is a field force because gravity starts from the inside layers of the earth, but doesn't touch us physically, an example of this would be that if we jump, gravity would pull us back down, but without touching you physically.

You might be interested in

block with of mass m is at rest on horizontal frictionless surface at time t=0. A force given by F=Bt+C is applied horizontally

Alexeev081 [22]

Answer:

$v_{2} =\frac{1}{2}$

Explanation:

From the second law of Newton movement laws, we have:

$F=m*a$ , and we know that a is the acceleration, which definition is:

$a=\frac{dv}{dt}$ , so:

$F=m*\frac{dv}{dt}\\\frac{dv}{dt}=\frac{F}{m}=\frac{\frac{1}{2}(t+1)}{4}=\frac{t+1}{8}$

The next step is separate variables and integrate (the limits are at this way because at t=0 the block was at rest (v=0):

$dv=\frac{1}{8}(t+1)dt\\\int\limits^{v_{2}}_0 \, dv=\int\limits^{2}_{0} {\frac{1}{8}(t+1)} \, dt$

$v_{2}=\frac{1}{8}*(\frac{t^{2}}{2}+t)$ (This is the indefinite integral), the definite one is:

$v_{2}=\frac{1}{8}*(2+2)=\frac{1}{2}$

3 0

3 years ago

HEY CAN ANYONE PLS ANSWER DIS!!!!!!!!!!!!!!!

Troyanec [42]

Answer:

Explanation:

you can seperate mixtures by filtration, evaporation, distillation and chromatography.

3 0

3 years ago

Read 2 more answers

Which of the following activities belongs on the top of the physical activity for pyramid

jasenka [17]

Playing Vedio Games. :)

7 0

3 years ago

Which phenomenon would cease to exist in the absence of this axial tilt?

konstantin123 [22]

If the Earth didn't tilt then we wouldn't have seasons.

8 0

3 years ago

When you drive a car around a curve that is not banked, what force provides the centripetal acceleration? HINT: Think about turn

algol [13]

The centripetal force is provided by the friction between the tyres and the ground. That's why a car will slip on ice, because there is less friction.

3 0

3 years ago

Read 2 more answers