Which is more dense, a clear plastic block or a glass block?

500 J of work are done in 4 seconds to lift a 40 kg box to the top of a high shelf. How much power was required to complete the lift?

According to Freud which part of a persons personality is the largest

A small 18 kilogram canoe is floating downriver at a speed of 1 m/s. What is the canoe's kinetic energy?

Light is: a wave a particle neither

Two motorboats named Alice and Bob are moving on a lake. Given the information about their velocity vectors in each of the following situations, indicate whether their velocity vectors are equal or otherwise.

Which chart correctly describes the properties of magnets and electromagnets? A. Property Electromagnet Magnet Permanent magnet X Temporary magnet X X Magnetic field created by aligning domains X Moving electric charge produces magnetic field X B.

Define colloid and list two examples.

An earthquake 50km from a city produces P and S waves that travel outward at 5000 and 3000 m/s, respectively. Once city residents feel the shaking of the P wave, how much time do they have before the S wave arrives?

You throw a rock upwards; it rises and then falls back down. We know that the acceleration due to gravity is 9.8 m/sec2 near the surface of earth.

Wich process occurs in a human muscle when it is forced to make tap without oxegen