The HR diagram displays the apparent magnitude of stars.

True

False

Which of the following ingredients, if added to foods in equal amounts, would have the LEAST impact on the energy density of the food? a. fruit juice b. table sugar c. sausage d. butter

Suggest and explain how to produce a radar that can determine the position of a plane effectively

Which of the following items could be dated by the use of radiocarbon dating? A. 65 million year old meteorite B. 15 million year old lava flow C. 60,000 year old metamorphic rock D. 60,000 year old mammoth bone

The following items describe observational characteristics that could indicate that an object is either a white dwarf or a neutron star. Match each characteristic to the correct object.

You lift a bowling ball with your hand, accelerating it upward. What are the forces on the ball and on what objects are they exerted?

A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 rad/s. A monkey drops a 9.29 kg bunch of bananas vertically onto the platform.

7. A type of non-renewable energy would be: O wind O petroleum O water solar

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.