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Which of the following would require more energy to heat it from 10°C to 20°C?
a. 200 kg of water
b. 200 kg of aluminum
c. 100 kg of steel.
Two particles execute simple harmonic motion of the sameamplitude and frequency along the same straight line. What is the phase difference between them
a car is driven east for a distance of 49 km then north for 35 km and then in a direction 33deg east of north for 22
a cylindrical container with a cross-sectional area of 62.2 cm2 holds a fluid of density 786 kgm3. at the bottom of the
three forces acting on an object are given by f1 -2.00i 2.00j n f2 5.00i -3.00j n and f3 -45.oi n. the object
Two concentric metallic spheres of radii r1 and r2> r1, respectively, are maintained at temperatures T1 and T2, and are separated by a layer of homogeneous material thermal conductivity k.
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (-196°C) and in boiling allyl alcohol (97°C). Find what pressure would be found at the freezing point of water
A cannonball is fired out of a cannon at [50] m/s at [45] degrees above horizontal, on level ground. How far will the cannonball travel horizontally
A student moves a 35.0 kg box up a ramp inclined at 12 degrees with the horizontal. What is the acceleration up the ramp
Two charged particles are located on the x axis. The first is a charge +Q at x = -a. The second is an unknown charge located at x = +3a. What are the two possible values of the unknown charge
How much heat is needed to raise the temperature of a 1.0-kg steel pot containing 2.0 kg of water from 25°C to the boiling point and then to boil away 0.50 kg of the water
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. determine the speed of the lighter box
An atomic nucleus initially moving at 420 m/s emits an alpha particle in the direction of its velocity and the remaining nucleus slows to 350 m/s. find what speed does the alpha particle have when it is emitted
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