A baseball weighs 1.5 N on Earth. Another type of ball weighs 1.5 N on the Moon. The ball with the greater mass is the
A) baseball.
B) other type of ball.
C) same for each.
D) not enough information
Answer: B
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Angular Momentum: A solid wood door, 90.0 cm wide by 2.00 m tall has a mass of 35.0 kg. It is open and at rest. A small 500-g ball is thrown perpendicular to the door with a speed of 20.0 m/s and hits the door 60.0 cm from the hinged side. The ball rebounds with a speed of 16.0 m/s along the same line. What is the angular speed of the door just after the collision with the ball?
A. 0.127 rad/s B. 0.925 rad/s C. 1.14 rad/s D. 2.28 rad/s E. 4.57 rad/s
The audible range of sound is from 20 Hz to ______________ kHz
Fill in the blank(s) with correct word
A uniformly charged rod (length = 2.0 m, charge per unit length = 5.0 nC/m) is bent to form one quadrant of a circle. What is the magnitude of the electric field at the center of the circle?
a. 62 N/C b. 56 N/C c. 50 N/C d. 44 N/C e. 25 N/C
The EPA primary standards guarantee that no person can be harmed by air pollution
What will be an ideal response?