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You bring a 200 \rm g wrench into the house from your car. The house is 16\rm {^\circ C} warmer than the car, and it takes 2.40 \rm kJ of energy to warm the wrench by this amount.
a) Find the heat capacity of the wrench.b) Find the specific heat of the metal it's made from.
A bimetalic strip consists of a thinstip of brass [Alphabrass=19X106(Co)-1] riveted to a thin strip of steel [Alphasteel=12X106(Co)-1]
The Doppler effect using ultrasonic waves of frequency 2.21×106 is used to monitor the heartbeat of a fetus. calculate the maximum velocity of the surface of the beating heart
In a certain region of space, the electric field, E, is constant in direction (say horizontally in the +x-direction), but its magnitude decreases.
A machine is driven by a series of gears. The first gear has 12 teeth and rotates 25.0 times per minute. How many teeth does it have
A stone thrown horizontally from a height of 5.72 m hits the ground at a distance of 13.50 m. Calculate the speed of the stone as it hits the ground
In the Challenger Deep of the Marianas Trench, the depth of seawater is 10.9 km and the pressure is 1.16 x 10^8 Pa. What is the density of seawater at this depth
Slopping air track: A glider moves frictionlessly along an air track that has been tilted by 1.5 inches over a span of 1.00 meters. What is the expected acceleration of the glider
In a piston cylinder assembly , the pressure and the tempreture of air are 200 KPa and the 500 c initially. The piston cross-sectional area is 0.2 m^2.The air is now cooled. what is the pressure in the cylinder
Keeping a constant speed of 0.6 m/s, a marble of mass 18 g rolls back & forth across a shoebox that is 14 cm high & 2 mm thick. Estimate the probability of its escaping through the wall of the box by quantum tunnelling.
How much energy was added to accomplish the transformation. What force must be exerted on the smaller piston to support the load.
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 3.30 m/s. What is her average speed over the entire trip?
A laser beam passes through a single slit. We observe an interference pattern on a screen 9.03 m away. Find the width of the slit
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