Determine how the mechanical advantage of a ramp changes as the ramp becomes longer

You don't have any matches, so you want to focus sunlight to ignite a pile of twigs for a campfire. Which mirror would be best to use? A. convex mirror B. concave mirror C. flat mirror D. plane mirror

A 10-newton force is applied to a 2-kg block. The block slides across the floor at a constant speed of 5 m/s. What is a valid conclusion from this situation? A) The force of friction was 10-newtons. B) The 10-newton force was an unbalanced force.

When we give the speed of a car what frame of reference are we using?

A pendulum takes. 5 seconds tp complete one cycle. what is the pendulum"s period and frequency?

Heat is transferred in three ways from one place to another. The mechanism of heat transfer whereby atoms or molecules of matter in a hotter part of the material vibrate or move with greater kinetic energy than atoms in the colder part and transfer

A force F = 94.9 N acts at an angle α = 35◦ with respect to the horizontal on a block of mass m = 29.3 kg, which is at rest on a horizontal plane. The acceleration of gravity is 9.81 m/s 2. If the static frictional coefficient is µs = 0.

Which statements about eclipses are true? Check all that apply. Earth's shadow creates a solar eclipse. A total lunar eclipse has a reddish color. The moon moves between Earth and the Sun during a solar eclipse.

Who would use more energy in a day - someone who plays a lot of sport or someone who plays a lot of computer games

If you know the wavelength of any form of electromagnetic radiation, you can determine its frequency because?

What are the relationships of the different types of matter, mass, and the change in the average kinetic energy of particles?