There is no such thing as a dc electric motor
Indicate whether the statement is true or false
FALSE
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Voyager 2 should reach the nearest stars (besides the Sun) in about 500 years
Indicate whether the statement is true or false
A piece of dirt falls from the bed of a moving truck. It strikes the ground directly below the end of the truck. (a) What is the direction of its velocity relative to the truck just before it hits? (b) Is this the same as the direction of its velocity relative to ground just before it hits? Explain your answers.
a. The velocity of the dirt is backward relative to the truck just before it hits the ground, (b) The velocity of the dirt is backward relative to the ground just before it hits the ground, b. The velocity of the dirt is backward relative to the truck just before it hits the ground, (b) The velocity of the dirt is forward relative to the ground just before it hits the ground, c. The velocity of the dirt is forward relative to the truck just before it hits the ground, (b) The velocity of the dirt is leftward relative to the ground just before it hits the ground,
A uniform solid sphere rolls without slipping along a horizontal surface. What fraction of its total kinetic energy is in the form of rotational kinetic energy about the CM?
What will be an ideal response?
An object weighing 44.1 N hangs from a vertical massless ideal spring
When set in vertical motion, the object obeys the equation y(t) = (6.20 cm) cos[(2.74 rad/s)t - 1.40]. (a) Find the time for this object to vibrate one complete cycle. (b) What are the maximum speed and maximum acceleration of the object. (c) What is the TOTAL distance the object moves through in one cycle. (d) Find the maximum kinetic energy of the object. (e) What is the spring constant of the spring.