Describe how you could measure the thickness of paper with an ordinary ruler

Which of the following proved that the de broglie's equation was correct? A) Einstein theory of relativity B) Planck's equation C) quantum mechanics D) Davisson-Germer experiment

If you could throw an object high enough to reach space how hard would you have to throw it

A student weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. what is the average power expended by the student to overcome gravity?

A box weighs 100N and its base area of 2 m2. What pressure does it exert on the ground?

Which safety measures should you follow during a thunderstorm? Check all that apply. (A) Avoid touching anything that conducts electricity. (B) Avoid touching a person who has been struck by lightning. (C) Go outside.

An electric dipole consists of charges 2e and 2e separated by 0.88 nm It is in an electric field of strength 4.

Which two elements are abundant in the fresh crust that comes from a spreading center?

A string is stretched and fixed at both ends, 2.7 m apart. If the linear density of the string is 0.031 g/cm and the tension is 917 N, what is the fundamental frequency?

How much energy did it take to bring you from first floor to second floor

Trent got a set of building blocks for his fifth birthday. He wanted to call his dad who lives out of state and share the exciting news about his gift.