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A car traveling 100 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 1.0m.
A) What was the magnitude of the average acceleration of the driver during the collision? Express the answer to 2 significant figures.
B) Express the answer in g's where 1.00 g=9.80m/s2 again expressing to 2 significant figures.
in a certain right triangle the two sides that are perpendicular to each other are 3.70 m and 5.40 m long. what is the
A point charge Q is trapped at the center of a thin-walled hollow conductive sphere of radius R, How much charge will collect on the inside surface of the hollow sphere
A 92 kg climber rappels down the rope applying friction with figure eight (piece of climbing equipment ) to reduce his his downward acceleration.
A solenoid 2 centimeter long consists of 2297 loops of wire. If the magnetic field inside the solenoid is 4 T, find the magnitude of the current that flows through it
Extreme-sports enthusiasts have been known to jump off the top of El Capitan, a sheer granite cliff of height 910 m in Yosemite National Park. How long is the jumper in free fall
Consider a visual binary star system with a period of 55.41 years. Its measured trigonometric parallax is 0.4217'' and, assuming that the plane of the orbit is in the plane of the sky, the true angular extent of the semi-major axis is 6.69''.
Let I1 be the branch current though R1, I2 be the branch current through R2, and I3 be the branch current through R3. Write Kirchhoff?s loop rule relation for a loop that travels through battery 1, resistor 1, and resistor 3. (Use a clockwise curr..
An electric motor rotating a workshop grinding wheel at the rate of 106 rev/min is switched off. Assume the wheel has a stable negative angular acceleration of magnitude 1.50 rad/s2.
An open tank is filled with gasoline to a height of 4.5 m from the bottom. A hole of diameter 2.4cm is at the bottom of the tank. How fast is the seepage? How many cubic meters of gasoline is wasted per second?
Power windmills turn in response to the force of high-speed drag. For a sphere moving through a fluid, the resistive force, FR is pro- portional to r2v2, where r is the radius of the sphere and v is the fluid speed.
Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 60 mi/h. How far must the faster car travel
A 915 N crate rests on thefloor. How much work is required to move it at constant speed 5.5 m along the floor against a friction force of 180 N
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