Give two conditions in which an object becomes weightless

X-rays cannot pass through Earth's atmosphere. Which of these is the best location to place a telescope used to observe x-rays from stars? mountain top of building space high-flying aircraft

Heat transfer within a fluid takes place by a. convection currents. b. radiation. c. conduction. d. density. I think it's A

A 50kg child on a skateboard experiences a 75n force as shown what is the expected acceleration of the child?

Tamika looks out a clear glass window on a sunny day. Which best explains why Tamika can see outside when she looks at the window? A. The glass absorbs all the light. B. The glass blocks the light. C. The glass transmits sunlight. D.

A stone with a mass of 10 kg is sitting on the ground, not moving. a) What is the weight of the stone? b) What is the normal force acting on the stone?

If you are asked to determine an objects speed, what information must you have? A: distance and period of time B: distance and direction C: period of time and direction D: distance and change in position

What is the kinetic energy of a 1150 kg sports car traveling down the road with a speed of 29 m/s?

3. A 2,000-kilogram railroad car moving at 5 m/sec to the east collides with a 6,000-kilogram railroad car moving at 3 m/sec to the west. If the cars couple together, what is their velocity after the collision?

A pendulum swings with amplitude. 02 m and period of 2 s what is its maximum speed

What bone cells respond to stress?