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Question: In your frame, a certain galaxy is moving at a high speed in the x-direction. Relative to the galaxy, a certain comet in the galaxy is also moving at a high speed in the x-direction. Let a be the galaxy's speed with respect to you, b be the comet's speed with respect to the galaxy, and c be the comet's speed with respect to you. Then
Select one:
a. a + b > c
b. a + b < c
c. a + b = c
d. a 2 + b 2 = c 2
a candle 8.80 cm high is placed in front of a thin converging lens of focal length 40.0 cm. what is the image distance
Two infinitely long straight currents are parallel to z axis. One of them, carrying a current I1, intersects at the x-y plane at the point (x1, y1); the other, with current I2, intersects at the x-y plane at the point (x2, y2). Find the resultant B p..
two stationary positive point charges charge 1 of magnitude 3.35 and charge 2 of magnitude 1.55 are separated by a
A bullet of mass 5.0 g is fired horizontallyinto a 2.3 kg wooden block at rest on a horizontal surface. At what speed is the bullet fired
A sample of helium behaves as an ideal gas as energy is addedby heat at constant pressure from 273K to 393 K. what is the mass of helium present
A frictionless, horizontal, simple, harmonic oscillator of mass 0.24 kg and possesses 0.020 J of mechanical energy.
A proton moves in a uniform 0.07 T magnetic field at 15 percent of the speed of light. determine the force acting the proton
A 4.000 liter container is filled to the brim with ethanol at 20.0 °C. The container is heated to 30.0 °C. What is the volume expansion coefficient of the container material
What is the mass of a proton that has been accelerated to a kinetic energy of 20,000 million eV
A carbon steel piano wire 1.4 m long with a cross-sectional area of 2 × 10?6 m2 and mass 0.1 kg is stretched 23 mm. Determine the speed of transverse waves on the string. For carbon steel, Young’s modulus is 2 × 1011 N/m2.
Two ships, A and B, leave port at the same time. Ship A travels northwest at 25 knots and ship B travels at 35 knots in a direction 40° west of south. What is the magnitude the velocity of ship
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