A rifle fires a bullet. Immediately after the bullet is fired, which of the following is NOT true?
A. the rifle and the bullet have the same magnitude of momentum
B. the force on the rifle due to the bullet and the force on the bullet due to the rifle have the same magnitude
C. the impulse on the rifle due to the bullet and the impulse on the bullet due to the rifle have the same magnitude
D. the rifle and the bullet do not have the same kinetic energy
E. the rifle and the bullet have the same kinetic energy
E. the rifle and the bullet have the same kinetic energy
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When a cannon fires a cannonball at a given speed, the smaller recoil speed of the cannon is due to differences in
A) forces. B) times. C) masses. D) momenta.
High temperatures are required to get H nuclei to fuse because they ________ one another because of their ________ electric charges
a. attract; negative b. attract; positive c. repel; negative d. repel; positive
How is 21 cm radiation produced?
What will be an ideal response?
A compound microscope has an objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. It is adjusted for minimum eyestrain for persons with a near point of 25 cm
If the two lenses are separated by 40.0 cm, what is the total overall magnification? A) 550 B) 2200 C) 28 D) 56 E) 470