An arrow is fired vertically upwards by a bow and reaches an altitude of 134 m. Find the initial speed of the arrow on the ground level.

Electromagnets can be used to lock doors. How could an engineer increase the strength of an electromagnetic lock? Check all that apply A. by increasing the current through the wire B. by reversing the current through the electromagnet C.

The five outer planets of our solar system are rocky and dense. A) True B) False

In three experiments, three different horizontal forces are applied to the same block lying on the same countertop. The force magnitudes are F1 = 12 N, F2 = 8 N, and F3 = 4 N.

Why would an object float in water, but sink in rubbing alcohol?

Science; a=vf-vi/t what is the weight of a 980kg object on earth

Electrical current is actually made of a. static charges. b. moving electrons. c. high or low voltage. d. resistance within a circuit.

A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. what is the lizard average acceleration

Explain the difference between balanced forces and action and reaction forces.

Describe and apply Newton's Three Laws

If you do 1000j of work on a system and remove 500j of heat from it, what is the change in its internal energy