What force is necessary to accelerate a 70-kg object at a rate ifm4.2 m/s

A glass lens, n glass = 1.52, has a 131 nm thick antireflective film coating one side, n film = 1.25. White light, moving through the air, is perpendicularly incident on the coated side of the lens.

A small box of mass m1 is sitting on a board of mass m2 and length L (Figure 1). The board rests on a frictionless horizontal surface. The coefficient of static friction between the board and the box is? s.

door 1 had its knob on the opposite side of the door as the hinges and door 2 has its door knob close to the hinge side of the door. suppose both doors require he same amount of torque to open.

What simple machines are used to create the shovel?

Which gland controls the response to fear and excitement?

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball traveling at 5 m/s. A 1,000 kg ball traveling at 5 m/s would have kinetic energy.

The amount of diffraction that occurs when a sound wave encounters a barrier depends on the wave's

How do i do this? Draw a Punnett square in your assignment worksheet that shows the results of a cross between a homozygous red bull (RR) and a heterozygous red cow (Rr). Be certain to title your Punnett square and indicate each parent.

An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 47.75 J B. 4,586.4 J C. 468 J D. 764.4 J

If an upstairs room is warmer than downstairs, is that a example of convection, conduction, or radiation?