Physics, 18.09.2019 19:10 alizeleach0123
Which one of the following statements is not true? the equations of kinematics apply to free-fall motion. near the earth's surface the acceleration due to gravity has the approximate magnitude of 9.80 m/s2, points downward when the motion is downward, and points upward when the motion is upward. in the absence of air resistance the motion of a baseball dropped from rest from the top of a building is an example of free-fall. in the absence of air resistance the motion of a baseball after being thrown straight upward from the ground is an example of free-fall. in free-fall motion near the earth's surface the acceleration is the acceleration due to gravity.
Answers: 3
Physics, 21.06.2019 19:00
When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.
Answers: 3
Physics, 22.06.2019 06:30
Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.
Answers: 2
Physics, 22.06.2019 10:30
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
Answers: 2
Physics, 22.06.2019 17:30
Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity
Answers: 3
Which one of the following statements is not true? the equations of kinematics apply to free-fall m...
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