In order to calculate pressure exerted on a surface, what quantity is divided by the surface area? a force b mass c altitude d volume

How are electrical signals transmitted over long distances?

Four weightlifters (A-D) enter a competition. The mass, distance, and time of their lifts are shown in the table. Weightlifter Mass (kg) Distance (m) Time (s) A 100.0 2.25 0.151 B 150.0 1.76 0.052 C 200.0 1.50 0.217 D 250.0 1.25 0.

The greater the of an object the more force is needed to cause acceleration

A ball is thrown downward from the top of a 55.0 m tower with an initial speed of 11.0 m/s. Assuming negligible air resistance, what is the speed of the ball just before hitting the ground?

A 2500 kg mustang car accelerates from rest to 30 m/s in 6 sec. What is acceleration of the mustang car?

Sally places a jar with some pennies into a pool of water and exactly half of the jar is submerged. The volume of the jar is 200 cm3 and the density of the water is 1 g/cm3. a. What is the buoyant force acting on the jar? b.

According to the law of reflection the angle of incidence is equal to the angle of blank

Sound travels 2146 m through a material in 1.4 seconds. What is the material?

The relationship between frequency and wavelength is a (n) relationship

Use g = 9.8 m/s2. From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s.