A women in an elevator lets go of her briefcase but it does not fall to floor. How is the elevator moving

A 4-m * 5-m * 6-m room is to be heated by a base-board resistance heater. It is desired that the resistance heater be able to raise the air temperature in the room from 5 to 25°C within 17 min.

On September 8, 2004, the genesis spacecraft crashed in Utah desert because it's parachute did not open. The 210-kg capsule hit the ground at 311 km/h and penetrated the soil to a depth of 81.0 cm.

Old seafloor gets subducted and destroyed where?

Will a liquid turn into a gas if the pressure of the liquid is increased and no thermal energy is added to the liquid

What automotive system keeps the vehicle's tires in contact with the road? A. The steering system B. The suspension system C. The drive train D. The transmission

A container, partially filled with water, is resting on a scale that measures its weight. Suppose you place a 200 g piece of wood inside the container filled with water. What happens to the scale reading?

Which is the best analogy of a wave? -A wave is like building a ramp. -A wave is like shaking a hand. -A wave is like water rippling in a pond. -A wave is like knocking down a building.

you can produce a sound by plucking a string or by blowing in a pipe. how are these two ways of producing sound are similar

What would provide specific information about the materials in the equipment used in a certain experiment

The wavelength of sound wave is 30 m. Frequency is 7 Hz. What is the wave speed