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Q. A curve in a highway has radius of curvature 130 m and is banked at 3.5°. On a day when the road is icy, what is the safest speed to go around the curve?
Q. What is the terminal speed for an 79.0 skier going down a 36.0 snow-covered slope on wooden skis = 0.060? Assume that the skier is 1.80 m tall and 0.500 m wide.
In order to calibrate the strength of an Fe-55 source, many measurements of the radiation field are made with the same detector located at different distances.
Two small non conducting spheres have a total charge of 85.2. When placed 1.09 apart, the force each exerts on the other is 10.4 and is repulsive. What is the charge on each.
If the football has a mass of 0.47kg and the time of contact with the ball is 0.021s, what is the force exerted by the ball on the kicker's foot.
Three children each of weight 356N make a long raft by lashing together logs of diameter 0.30m and length 1.8m. how many logs will be needed to keep them afloat in fresh water. take density of the logs to be 800kg/m^3.
What is the frequency of ultrasound in a medium if he wave length is 3.0 x 10^-3 m and velocity is 1300 mm/ms.
A 11.0g bullet is fired horizontally into a 103g wooden block that is firstly at rest on a frictionless horizontal surface and connected to a spring of constant 154N/m. The bullet becomes embedded in block. If the bullet-block system compresses the s..
A particle moves with constant acceleration a. The expression v1+at represents the particle's velocity at what instant in time.
Choose the correct explanation for why you can determine the maximum load given that theta_min is the minimum angle crane arm can make with the horizontal.
You travel to an alien planet. The local population tries very hard to tell you what gravity is on the surface. You cannot understand them, and do not have a tool to calculate gravity directly. You also ran out of water. They offer a liquid to you, o..
A block of mass 2.7 kg being released from rest on a 1m frictionless plane, inclined at an angle of 40 degree. The block sided down the inclined and struck second block mass of 3.7 kg. If the two blocks stick together, with what speed would they move..
Problem on elevator
A 0.50-kg object is attached to an ideal massless spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.7 m/s at the equilibrium position.
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