Thousands of years ago, giraffes with short necks were common within giraffe populations. Nearly all giraffe populations today have long necks. This difference could be due to

The water level in identical bowls, A and B, is exactly the same. A contains only water; B contains floating ice as well as water. When we weigh the bowls, we find that Group of answer choices

17. A simple machine made up of a slanted surface such as a ramp or stairs is called A wheel & axle B wedge C pulley inclined plane

Order the seven basic spectral types from hottest to coldest.

A constant current is sent through a helical coil. the coil a. tends to get shorter explain. b. tends to get longer c. tends to rotate about its axis d. produces zero magnetic field at its center e. none of the above

What will the stopping distance be for a 3,000-kg car if - 3,000 N of force are applied when the car is traveling 10 m/s? A. 30 m B. 150,000 m C. 50 m D. 10 m

How do inertia and centripetal force combine to keep an object moving in circular motion?

Compare and contrast the average kinetic energy of 0.5 L of coffee at 34°C, 0.5 L of coffee at 38°C, and 0.25 L of tea at 43°C.

A 7700-kg box car traveling at 14 m/s strikes a second car at rest. The two stick together and move off with a speed of 5.0 m/s. What is the mass of the second car?

What will happen if there is a change in a magnetic field?

Question 2 10 pts The voltage in a particular circuit is 10.0 V. The current in the circuit is 20 A. What is the resistance? A. 2.0 B. 30 C. 200 D. 0.5