Which of these is an element?

-hematite - gold - quartzite - pyrite

A 2 kg watermelon is dropped from a 4 m tall roof. How fast will the watermelon be moving as it strikes the ground below?

How to the magnitude of the applied force of a suspended string which applies a horizontal force to make an angle to the vertical

A ball starting from rest at the top of an inclined plane accelerates at 2 m/s2 and reaches the bottom of the plane in 3 seconds. what is the length of the plane

0.92 kg of R-134a fills a 0.14-m^3 weighted piston-cylinder device at a temperature of - 26.4°C. The container is now heated until the temperature is 100°C. Determine the final volume of R-134a.

Can we divide two vectors?

A digital thermometer reads 15 degrees Celsius, what is the uncertainty?

Determine the magnitude of the effective value of g⃗ at a latitude of 60 ∘ on the earth. assume the earth is a rotating sphere.

What characteristic of a planet determines the acceleration due to gravity on it?

Which set of terms best defines what affects kinetic energy and potential energy, respectively? position, gravity gravity, position velocity, height height, velocity

You are operating a powerboat at night. You see green and white lights on another boat. What should you do?