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Assume a rocket launches with an acceleration of 30.5 m/s^2. Estimate what is the apparent weight of a 92 kilogram astronaut aboard this rocket?
Looking out the window of a train you observe the passengers on a second train moving in the opposite direction at a constant velocity. determines which of the two trains is actually moving
An unknown material has a normal melting/freezing point of -25.1° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C°). What is the latent heat of fusion of the unknown material
A curve of radius 65 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve
A 50.0-kg student climbs a 5.00-m-long rope and atops at the top. How much work does she do
A light ray in air is incident on an air to glass interface at anangle of 45 degrees and is refracted at an angle of 30 degrees to the normal. What is the index of refraction of the glass?
A 3.8-cm-diameter circle lies in the xy-plane in a region where the electric field is E=(1600i + 1600j + 1600k) N/C. What is the electric flux through the circle
Water flowing through a garden hose of diameter2.70cm fills a20.0-L bucket in1.30min. What is the speed of the water leaving the end of the hose
A block of mass m starts from rest at the top of a ramp of vertical height h . The block slides down frictionless ramp and reaches a speed v at the bottom . if the same bock were to reach a speed 3v at the bottom , it would need to slide down a fr..
A steel wire of length 1.98m with circular cross section must stretch no more than 0.220cm when a tensile (stretching) force of 360N is applied to each end of the wire
There are two resistors, R1 and R2, connected in series with an ideal battery. What are the actual voltages across the resistors
you hear the sonic boom of a high speed jet plane exactly 2.90 s after it passes directly overhead in level flight. what is the altitude of the plane
A steel aircraft carrier is 384 m long when moving through the icy North Atlantic at a temperature of 4.24 °C. By how much does the carrier lengthen when it is traveling in the warm Mediterranean Sea at a temperature of 25.3 °C?
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