Which of the following happens in a steam engine?

A. Fuel is burned outside the engine.

B. Heat is converted into work.

C. Hot steam pushes a piston.

D. all of the above

3. A 1576 kg car moving south at 32 m/s is struck by a 1837 kg car moving north at 33 m/s. The cars stick together in a perfect inelastic collision. How fast and in what direction do they move immediately after the collision?

The universal law of gravity states that all objects attracts all other objects.

Darren drives to school in rush hour traffic and averages 28 mph. He returns home in mid-afternoon when there is less traffic and averages 42 mph. What is the distance between his home and school if the total traveling time is 1 hr 15 min?

when a moving air mass encounter a mountain range in their path, Group of answer choices The air mass will stop and the air will remain calm The air mass will rise and the sky will be clear The air mass will bounces back The air mass will rise and

To meet the productivity goal, you must move 75 units of product per hour. You have moved 30 units of product in 30 minutes. How many units of product will you need to move per minute for the remainder of the hour to meet the productivity goal?

a subsrance has an atomic number of 80. How many protons and electrons do atoms of the substance have? what is the subsance?

Ideal meters problem. What internal resistance is ideal for a voltmeter? What internal resistance is ideal for an ammeter?

numerical question : what is the required heat to raise the temperature of 2 kg parrafin by 10 Celsius if 44000 joules is required to raise it by 200 celsius

Psychologists avoid studying emotions because they have little impact on behavior T F

Sheila lives in the seashore community of Beachview. At 6:00 a. m. one morning, she noticed that the local ocean water was at high tide. At approximately noon that same day, she noticed the water was at low tide.