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Luke and Leia are twins, and Luke immediately leaves after birth on a spaceship traveling at 65% of the speed of light, and he remains traveling at this speed until he returns to his sister. When Luke returns, Leia is 17 years old. How old is Luke when he returns?
Heat is another word for thermal energy. Dissimilar materials at the same temperature can contain different amounts of heat.
A slingshot will shoot a 10-g pebble 22.0 mstraight up. How much potential energy is stored in the slingshot's rubber band
A 1.00 kg soccer ball is kicked down field at 5 m/s by a Bob on Team A. Tom, a member of Team B, runs up and kicks the ball so that it is traveling at 15 m/s, what is the impulse acting on the ball
A submerged solid object displaces a. its own volume in the liquid. b. more than its own volume in the liquid. c. less than its own volume of liquid. I am confused with the wording. Why do they use volume instead of weight?
A 50g ball travelling at 25m/s is bounced off a brick wall and rebounds at 22m/s. A high speed camera records this event. If the ball is in contact with the wall for 3.5ms, what is the average acceleration of the ball throughout this time interval..
Two small, positively charged spheres have a combined charge of 5.35×10-5 C. If each sphere is repelled from the other by an electrostatic force of 1.00 N
A 5.00 x 10^4 kg space probe is travelling at a speed of 14000 m/s through deep space. Retrorockets are fired along the line of motion to decrease the probe's speed. The retrorockets generate a force of 4.00 x 10^5 N over a distance of 2600 km. What ..
A street lamp weighs 152N. It is supported equally by two wires that form the angle of 120° with each other. What is the tension of each of these wires.
An electron is accelerated through a potential difference of 100 V, Find the radius of the circular path in which it will travel
Consider the system described in the example with m1 = 0.51 kg and m2 = 0.40 kg. If F is sufficiently large, it is clear that the block will accelerate to the right. Find the range of F that allows the system to remain at rest
A person pulls a 26kg suitcase using a rope attached to the suitcase at an angle of 28 degrees to the horizontal. The coefficient of static friction of the suitcase with the floor is 0.3 and the coefficient of kinetic friction is 0.20.
An ambulance with a siren emitting a whine at 1200 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s, How fast is the ambulance moving
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