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If a car traveling at 23 m/s is brought to a full stop in 3.8 s after the brakes are applied, find the average acceleration during braking.
You are piloting a spacecraft whose total mass is 1170 kg and attempting to dock with a space station in deep space. How long should you sustain the firing of the retro-rocket
A basketball player jumps straigh up to launch a long jump shot at an angle of 45 degrees with the horizontal and a speed of 15 m/s. How far from his original position does he land
a uniform metal plate of edge 25 cm has a square section of edge 5.0 cm cut out of it.a where is the center of gravity
The human eardrum has an area of 5.0×10-5 m2. What is the sound power at the threshold of pain
It has been claimed that an insect called the froghopper (Philaenus spumarius) is the best jumper in the animal kingdom, What is the velocity of the insect after it has accelerated through this short distance
The velocity of a boat with respect to the water is 4.0 m/s at an angle of 30.0 degrees NORTH of EAST. What is the velocity of the boat with respect to the ground
on a hot summer day(30 degrees celsius),a pesky little mosquito produced its warning sound near your ear. what is the frequency in hertz of the sound wave
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. Calculate the intensity of the sound wave emitted
The 4{rm kg} block in the figure is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended and the tension in the upper string is 83N.
How much work did movers do (horizontally) pushing a 140{rm kg} crate 10.60 m across a rough floor without acceleration, if the effective coefficient of friction was 0.700.
the inside and outside temperature of a carnot refrigerator are 10*C and 25*C, respectively. find the work required in each cycle
A soccer player runs up behind a 0.450-kg soccer ball traveling at 3.20 m/s, What magnitude impulse did the soccer player deliver to the ball
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