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Figure 2-28 shows a red car and a green car that move toward each other. Figure 2-29 is a graph of their motion, ; showing the positions xg0 : 270 m and xr0= -35.0 m at time t = 0. The green car has a constant speed of 20.0 m/s and the red car begins from rest. What is the acceleration magnitude of the red car?
The motor of a fan turns a small wheel of radius rm = 2.23 cm. This wheel turns a belt, which is attached to a wheel of radius rf = 3.07 cm that is mounted to the axle of the fan blades. Measured from the center of this axle, the tip of the fan bl..
A certain kind of film requires an exposure time of 0.010 s with anf / 12 lens setting. Another type of film requires quadruple the light energy to produce the same level of exposure. What f-number does the second type of film require with the0.010-s..
At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 5.03 m/s. What is the minimum time that a player must wait before touching the ball
A cart traveling at 0.3 m/s collides with stationary object. After the collision, the cart rebounds in the opposite direction. In which collision is the impulse on the cart greater
A copper rod has a length of 1.7 m and a cross-sectional area of4.1 x10-4 m2. One end of the rod is incontact with boiling water and the other with a mixture of ice andwater. What is the mass of ice per second that melts? Assume that no heat is lo..
Fill in the following table, using the value of a obtained from the simulation. Record and calculate data to the nearest three decimal places. The masses in the table are in kg, but the input data are in grams, so make the necessary conversions. ..
Find the temperatures as a function of x and t if both faces are maintained at 0°C. Solve for the temperatures at t = 2.062 seconds.
A man is lifting a 210 Newton object. His spine and back are a uniform rod of weight at 320 Newton. Evaluate what is Compression force
A drop of water on a countertop reflects light from a flower held 3.10 centimeter directly above it. Evaluate the focal length of the water drop, assuming that it may be treated as a convex spherical mirror
how long does it take for a short pulse of light to travel from one end of the glass to the other? a beam of light from
a diverging lens has a focal length of 50 a source of light is placed 100 cm in front of lens in front of the lens. where will the image be formed
A parallel-plate air capacitor has a capacitance of 300 {\rm pF} and a charge of magnitude 0.250 \mu {\rm C} on each plate. The plates are 0.500 {\rm mm} apart. What is the surface charge density on each plate
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