A car travels 20 km west, then 20 km south. what is the magnitude of its displacement?

A) 0 km

B) 20 km

C) 28 km

D) 40 km

The specific heat capacity of ice is about 0.5 cal per gram per degree Celsius. Suppose it remains at that value all the way to absolute zero. Determine the quantity of heat needed to change a 1 g ice cube at absolute zero to 1 g of boiling water.

Can we use a copper wire instead of eureka wire

Why are Carbon-14 and carbon-12 considered to be isotopes? A. Carbon-14 decays at a faster rate that Carbon-12 B. Carbon-14 is more stable than Carbon-12. C. Carbon-14 has more neutrons than carbon-12. D.

The electric field at the surface of a charged, solid, copper sphere with radius 0.200 m is 3800 N>C, directed toward the center of the sphere.

Now the elevator is moving downward with a velocity of v = - 2.8 m/s but accelerating upward with an acceleration of a = 5.5 m/s2. (Note: an upward acceleration when the elevator is moving down means the elevator is slowing down.

A ship on the surface of the ocean receives a sonar echo back from an underwater object. The echo path from the object to the ship is at an angle of 35 degrees above the horizontal and takes 3s to return. (Velocity of sound in sea water = 1500m/s).

A wave has a speed of 6 m/s and a wavelength of 12 m. What is the frequency of this wave? a. 2.0 Hz b. 0.5 Hz c. 18 Hz d. 72 Hz

What is the acceleration of a body revolving in a circle at uniform speed? A. The acceleration is zero. B. The acceleration is directed tangentially. C. The acceleration is directed toward the center. D.

What volume is occupied by 2.35 moles of he at 25 degree c and a pressure of 0.980 atm?

3. A stone is thrown upward at an angle. What happens to the horizontal component of its velocity as it rises