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When a 410 degrees Celsius object of 80 grams is placed in 425 grams of 17.5 degrees Celsius of water. After 5 minute, the water has warmed to 20.75 degrees celcius. What is the objects specific heat capacity?
An 79 kg person is parachuting and experiencing a downward acceleration of 2.0 m/s2 shortly after opening the parachute. What upward force is exerted on the open parachute by the air
The intensity level produced by a jet airplane at a certain location is 163 dB. Calculate the intensity of the sound wave generated by the jet at the given location.
A grating has exactly 7800 lines uniformly spaced over 2.63 cm, What is the expected angle for the third-order maximum of the green line
Suppose the speed of light were only 3000 m/s. A jet fighter moving toward a target on the ground at 600 m/s shoots bullets, What are the bullets' velocity relative to the target
The driver of a 1550 kg car, initially traveling at 12.1 m/s, applies the brakes, bringing the car to rest in a distance of 18.5 m. Find the net work done on the car
An oscillating block-spring system has a mechanical energy of 1J, amplitude of 10 cm, and a maximum speed of 1.20 m/s. Discover (a) the spring constant, (b) the mass of the block, and (c) the frequency of oscillation.
Having taken a nap under a tree only 20 m from the finish line, Rabbit wakes up to find Turtle 19.5 m beyond him, grinding along at 1/4 m/s. How many seconds will he win or lose by
three point charges are placed on the x-axis as follows 22 mc at x 0 30 mc at x 0.50 m and -14 mc at x 1.3 m.a find
An electron is observed traveling at a speed of 1.89 107 m/s parallel to an electric field of magnitude 10,660 N/C. How far will the electron travel before coming to a stop? (The mass of electron is 9.109 10-31 kg, and the charge on the electron is 1..
An observer is at 5pc from the Sun in the plane of Jupiter's orbit. Once in 11.9 years Jupiter crosses the disk of the Sun. He cannot resolve the Solar disk nor the Jupiter (cf. HW1), but he observes slight dimming of the star. What is the magnitu..
The position of an object connected to a spring varies with time according to the expression x = (5.8 cm) sin(9.5?t), Find the period of this motion
Positive pressure is used in blood transfusion. Suppose the pressure in a vein is 0.25kPa and the density of blood is 1.04 x 103 kg/m3, how high above the vein must the blood container be placed
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