How much potential energy does a 20-kg barrel have when it is in the truck whose floor is 5.0 m above the ground? P. E. = J

5. A 30.0-g rifle bullet traveling 185 m/s embeds itself in a 3.15-kg pendulum hanging on a 2.85-m-long string, which makes the pendulum swing upward in an arc. Determine: a. The vertical component of the pendulum's maximum displacement. (10pts) b.

Which would best reduce the amount of energy needed to pull a wagon up a ramp? 1. Increasing the slope of the ramp 2. Reducing the friction between the wagon wheels 3. Reducing the length of the wagon handle 4.

Water has a much higher specific heat than most other covalent compounds. What do you predict might happen if water had a low specific heat instead?

If you have a temporary illness that may affect your ability to drive, you should: A. Determine your own fitness for driving B. Obtain a restricted drivers license C. Only drive when you're heavily medicated

What needs to be emphasized in this step when reading? "Turn the two-bottle assembly over, and place the assembly on a table with the filled bottle on top. Watch the water slowly drip down into the lower bottle ...

What is the formula for convection?

A 398-kg boat is sailing 14.0° north of east at a speed of 1.50 m/s. 23.0 s later, it is sailing 33.0° north of east at a speed of 4.40 m/s. During this time, three forces act on the boat: a 32.8-N force directed 14.

You use sunglasses to reduce the glare of the sun when you go outside. You are taking advantages of light's ability to do which of the following? Possible Answers: to reflect to refract to diffract to polarize

Is light made of elements and atoms

Why do surface winds tend to cross the isobars?