Weightlessness is experienced by an astronaut in space. This means that the astronaut's muscles have to be stronger to move his body or lift other objects.

True

False

2. When pressing the accelerator on a car, the energy of the fuel is transformed into the energy that makes the car move. mechanical; chemical chemical; mechanical

A rock is thrown off a cliff at an angle of 57° above the horizontal. the cliff is 135 m high. the initial speed of the rock is 24 m/s. (assume the height of the thrower is negligible.

How is the movement of the electrons different when the two hydrogen atoms are brought together

The force per meter between the two wires of a jumper cable being used to start a stalled car is 0.244 N/m. (a) What is the current (in A) in the wires, given they are separated by 1.70 cm

A straight wire in a magnetic field experiences a force of 0.017 N when the current in the wire is 1.1 A. The current in the wire is changed, and the wire experiences a force of 0.077 N as a result. What is the new current

In order for convection to occur, you must have

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?

In what way are all forms of potential energy the same?

Enise is riding her bike and falls to the ground. During the collision, she hits both grass and cement. Which best explains why Denise had fewer injuries to the area of her body that hit the grass?

A rock is dropped into the Grand Canyon. It takes 18 seconds to hit the bottom. Calculate how deep the canyon is.