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a constant force changes the speed of a 76 kg sprinter from3m/s to 4m/s be 0.45s. What is the magnitude (in m/s2)of the acceleration of the sprinter?
Gas in a container expands at a constant pres- sure of 88 atm. Find the work done by the gas if the initial volume is 5 L and the final volume is 10 L . Answer in units of J
A 21.5 µF spherical capacitor is composed of two metallic spheres, one having a radius twice as large as the other, determine the volume of this region
q1. the driver of a 1700 car travelling on a horizontal road at 140 suddenly applies brakes. due to the slippery
A large piece of cork weighs 0.295 N in air, he spring scale reads 0.903 N. Find the density of the cork
A rocket for use in deep space is to be capable of boosting a total load (payload plus the rocket frame and engine) of 3.15 metric tons to a speed of 10 000 m/s. How much fuel plus oxidizer is required
Two football players go to kick a ball at the same time. One kicks it with a velocity of 25ms-1 at an angle of 12o to the horizontal, What is the resultant velocity of the bal
You access the roof of a building and throw a ball to the ground with an initial velocity of 12.0 m/s at an angle of 25.0° below the horizontal. At what time does the ball hit the ground
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 certain fluid has a density of 1110 kg/m3 and is observed to rise to a height of 2.5 cm in a 1.0-mm-diameter tube. Calculate the surface tension of the fluid
Two wire loops are side by side (1, then 2). The current I(1)in loop 1 is supplied by an external source and is clockwise asviewed from the right. While I(1) is increasing, what is the direciton of the magnetic force exerted on loop 2 if any? Expla..
The person pushes the crate a distance of 12 m as measured along the ramp. Find the work done by gravity on the crate
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 20.0 cm on a spring with a force constant of 16.0 N/m. What is the weight of the bananas in newtons
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