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A rocket ship is 45.0 m long according to measurements made in its rest frame, and moves at 0.385c by respect to the Earth. Astronaut Naomi sends a laser pulse from the tail of the rocket to the nose, where it reflects off a mirror, and returns to Naomi. (a) How long does the round trip take, according to Naomi? (b) How long does the round trip take according to Tariq, an observer on Earth?
A stone of weight W has specific gravity 1.68. When the stone is suspended from a scale and submerged in water, what is the scale reading in terms of its weight in air
A UFO streaks across the sky at a speed of 0.90c relative to the earth. What length does the person measure for the UFO when it lands
A rocket is fired straight up and accelerates upward at 12 m/s2 for 18 seconds. The rocket then runs out of fuel and coasts still going up. What is the package's speed when it hits the ground
A crow flies in two consecutive displacements to a point that is 80mto the west. Its first displacement is 80m in a direction θ =50 degrees west of north. What is the magnitude of its second displacement?
a bat emits a sound whose frequency is 88.1 khz. the speed of sound in air at 20.0 oc is 343 ms. however the air
A train 400m long is moving on a straight track with a speedof 82.4 km/h. determine how long the train blocked the crossing
a 2m long uniform bar that weighs 10n is used to hold a 3n sign. a cable is attached to one end of the bar and the
two shuffleboard disks of equal mass one orange and the other yellow are involved in an elastic glancing collision. the
Illustrate what management's role in addressing these challenges. Illustrate what type of information technology would increase production?
At the local playground, a 16 kilogram child sits on the end of a horizontal teeter-totter, 1.5 meter from the pivot point. Find in which direction does the teeter-totter rotate
An ideal gas is enclosed in a cylinder that has a moveable pistonon top. The piston has a mass of 4500 g and an area of 6.50 cm2 and is free to slide upand down, keeping the pressure of the gas constant.
A body moves in a straight line with the square of its velocity being a linear function of displacement, s as follows: v2=A+Bs, where A=4m2/s2 and B=0.4m/s2. Calculate the body’s acceleration, a and the distance traveled for the last 2sec before it r..
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