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Q1. Assume a rocket launches with an acceleration of 34 m/s2. What is the apparent weight of a 94 kg astronaut aboard this rocket?
Q2. A ceiling fan with 89 cm diameter blades is turning at 65 rpm. Suppose the fan coasts to a stop 28 s after being turned off.
Q3. An insulated Thermos contains 210 cm3 of hot coffee at 88 °C. You put a 19.00 g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with an environment.
What are magnitude and direction of the force
On a cello, the string with the largest linear density (1.54 10-2 kg/m) is C string. This string produces a fundamental frequency of 63.4 Hz and has the length of 0.795 m between the two fixed ends. Find tension in the string.
A small grinding wheel has a moment of inertia of 4.0×10-5 kg m^2. What net torque must be applied to the wheel for its angular acceleration to be 160 rad s^2.
If a parallel mirror He-Ne laser had a homogeneous line shape with v=1.5GHz, and small signal peak coefficient of .001/cm length=100cm and reflectance's 100 percent and 97 percent, how many longitudinal modes would initially contribute to the laser o..
You're driving down the highway late one night at 18 when a deer steps onto the road 36 in front of you. The reaction time before stepping on the brakes is 0.50, and the maximum deceleration of your car is 12.
An ocean liner leaves New York City and travels 37.0° north of east for 171 km. How far east and how far north has it disappeared? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
What is instantaneous acceleration
The coefficient of static friction between the 3000 lb car's tires and the road is 0.5. Determine the steepest grade the car can drive up at constant speed if car has (a) rear=wheel drive; (b) front-wheel drive; (c) four wheel drive.
If the football has the mass of .420 kg and the time of contact with the ball is .014 s, what is the force exerted by the ball on a kicker's foot.
What is velocity of the boat relative to the shore
What magnitude of charge must be given to the drop
How to create a condition of weightlessness inside aircraft
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