what is the force if a block of wood with mass 20 kg slides along a frictionless surface at 2 m/s squared

What is the gravitational potential energy of a 55 kg box that is 8.0 m above the ground?

You obtain a 100-W light bulb and a 50-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct? a.

A ramp is 2.8 m long and 1.2 m high. How much power is needed to push a box up the ramp in 4.6 s with a force of 96 N?

How do you get meters squared per second squared

An African Swallow, flying with a horizontal velocity of 80 m/s due North, drops a coconut from a height of 8 m. When does the coconut hit the ground after it is released?

Galileo used his telescope to discover evidence for the Sun-centered model of the solar system. this evidence included all odds the following except a. venus going through phases b. Venus revolving around Sun, not Earth, c.

How much heat would be needed to completely evaporate 43.5 g of boiling water at a temperature of 100 °C? Express your answer in units of joules.

Metallic bonds are important to how paperclips are both made and used. Which statement best describes how metallic bond properties are important for making and using paperclips?

The greenhouse effect on which planet makes it the hottest planet in our solar system? A. Mars B. Mercury C. Venus D. Jupiter

A periodic wave with wavelength = 1 m has frequency f = 3 Hz. What is the wave's speed?