The universe is made up of ___? A. one galaxy B. Several galaxies C. Thousands of galaxies D. No galaxies

You are standing on a cliff that is 75 m above the ocean and you see a ship that is 350 m from the bottom of the cliff. Find the angle of depression from you to the ship.

For a plane mirror, how is the object s related to the distance s?

Calculate the energy needed to heat 4 kg of water from 25°C to 45°C. heat = 80 Kcal 100 Kcal 180 Kcal 280 Kcal

What is sound reverberation?

You are given two rectangular blocks of shiny metal, Block A and Block B, and are asked to determine which one will float in a bath of mercury (a metal that is liquid at room temperature).

Some car manufacturers claim that their vehicles could climb a slope of 42 ∘. For this to be possible, what must be the minimum coefficient of static friction between the vehicle's tires and the road?

Which of the following has the least impact on the environment? A. solar power B. nuclear power C. fossil fuels D. hydroelectric power

Why is steel better to conduct sound than air? use the words density and compression in your answer

4. How does density affect refraction of a lightwave?

Kinetic friction is affected by the weight of the object. TrueFalse