(01.02 MC) Nicole pushes her bike up a hill. Overhead, the sun exerts a gravitational force on Earth. Which statement is true about the bike and Earth? (3 points)

They both experience contact forces.
They both experience non-contact forces.
The bike experiences a non-contact force and Earth experiences a contact force.
The bike experiences a contact force and Earth experiences a non-contact force.

When Nicole pushes the bike up a hill we know there is a friction force between hill and bike then due to this friction force It will have to push harder to move it upwards along the hill.

So this type of friction force during uphill is a type of contact force which is present of the bike.

Apart from this there are also few non contact force between bike and its surroundings

One of the force is gravitational force of Sun and Earth on the bike while will act towards their centers.

This force is a field force and it do not require any contact with the bike

So here correct answer would be

They both experience contact forces. They both experience non-contact forces.

Explanation:

Brainlist me if im right :)

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27