A squirrel (mass 0.9 kg) is running across the road at a speed 4.0 m/s. What is the

squirrel's kinetic energy?

A bag of sugar has a mass of 2.26 kg. What is its weight in newtons on the moon, where the acceleration due to gravity is one-sixth of that on Earth? (Hint: On Earth, g = 9.8 m/s2.)

An object at a temperature of 3° kelvin emits thermal radiation. What region of the electromagnetic spectrum would the peak of this emission fall in?

What is the refractive index of a medium? A. the ratio of the velocity of light in the medium over the velocity of light in a vacuum B. the ratio of the velocity of light in a vacuum over the velocity of light in the medium C.

Why is it important to understand size, function and structure of the universe?

What materials in a torch are conductors and insulators?

Which type of waves are whale songs in an ocean?

Which is normally greater: static friction or sliding friction on the same object? Static friction is normally greater than dynamic friction. On the same object, static friction and dynamic friction are equal.

A child pulls a wagon 3.0 m using a force of 55 N at an angle 35° above horizontal. The force of friction on the wagon is 12 N. Calculate the net work done on the wagon

Which of these accurately describes a chemical reaction A. products and reactants combine to form new reactants. B. Reactants combine to form products C. Products and reactants combine to form new substances D. Products combine to form reactants

Why construction is present near the bulb