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a) How many kilocalories are generated when the brakes are utilized to bring a 910 kg car to rest from a speed of 101 km/h?
b) How long does it take a 768 W coffee pot to bring to a boil 0.57 L of water initially at 8.0°C? Suppose that the part of the pot which is heated with the water is made of 358 g of aluminum, and that no water boils away.
A 0.260 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. What is the mass of the second ball
An airplane flies due west at a velocity of 645 kilometres per hour (km/h). The wind blows from the north at a velocity of 125 kilometres per hour (km/h). Find the plane resultant velocity?
two players hit an air hockey puck simultaneously. one player hits the puck with a force 4.75 at an angle 23.9. the
a 3 kg cart moves on an air track at 1.2 m/s. It collides with and sticks to another cart of mass 5 kg, What is the velocity of the combined cart after collision
Newton's apple was a sphere with a 5cm radius and density of 850kg/m^3. Its drag coefficient is 0.60 and the density of air is 1.2kg/m^3. Find the apple' terminal velocity
A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 1.8 meters long and 0.9 meters high. How far along the rough patch do the blocks go before stopping
an office copier uses a lens to place an image of a document onto a rotating drum. the copy is made from this image. a
In everyday life we know that something described as 'white hot' is hotter than something described as 'red hot'. What is the physics behind these everyday sayings? The BB spectrum: Peak emission wavelength gets shorter as object gets hotter: Wave..
A parallel-plate, air-gap capacitor has a capacitance of 0.15 ?F. The plates are 0.40 mm apart. What is the area of each plate
The position of a particle moving along the x amis by x=6t^2 -1t^3, where x is in meters and t in secconds. What is the positiion of the particle
A chain of movie theaters is decorated with light fixtures that when the white light passes through a transparent plate, it becomes yellow light. What color is the light reflected from the plate
An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting poisition in a time t2. (a) If she is swimming initially in the positive x-direction, determine her average velocities symbolically in (a) the first hal..
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