observer is sitting on a car moving with some constant velocity. The observer sees things around him, in the ____ a) Relative frame of reference b) Absolute frame of reference c) Valid frame of reference d) Ground frame of reference

What is the total energy of an electron moving with a speed of 0.950 c? a. 2.6 x 10-13 J b. 1.1 × 10-13J c. 1.2 x 10-14 J d. 8.2 × 10-14 J

6. An unknown ship is traveling at 0.8 c to the left as measured by someone on the Earth. Earth sends space ship traveling to the right at 0.9 c to intercept the ship. Eanh a) What is the velocity of the alien space ship as measured by the ship from Earth? b) If the Earth ship fired a laser at the alien ship, what would be the velocity of the laser according to someone on the alien ship?

A particle travels at 0.60c. Determine the ratio of its kinetic energy to its rest energy.A) 0.25B) 0.50C) 0.60D) 0.64E) 0.80

1. An observer on earth sees objects A and B traveling toward the earth each with a speed v but from different directions. Draw the shape of each object as measured by someone traveling with that object, eg. how would objects A look according to someone on A. Earth

9. An astronomer on earth observes two spacecraft moving away from each other along an axis that passes through the earth. The astronomer measures the speed of each spacecraft to be 0.875c relative to the earth. At what speed are the spacecrafts moving apart relative to each other? a) 0.496c b) 0.467c c) 1.750c d) 0.143c e) 0.991c 10. How far apart must two objects on the moon be to be resolved by a telescope which has a 7.80-m diameter mirror? The wavelength of the light used is A610 nm, and the distance to the moon to be 3.80 x 105 km. a) 24.4 m b) 29.7 m c) 36.3 m d) 72.5 m e) 12.2 m 11. A converging lens with a focal length of (f₁ = 32.0 cm) is placed 42.0 cm to the left of a diverging lens with a focal length of (f2 = -25.5 cm). An object is placed 40.0 cm to the left of the converging lens. What is the location of the image produced by the combination of lenses? a) 32.5 cm to the right of the diverging lens b) 32.5 cm to the left of the diverging lens c) 160 cm to the left of the…