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Radiation of intensity 1.00 kW/m2 is incident on an area perpendicular to the incoming light. The area is now rotated 20? about an axis perpendicular to the incoming light. What is the resulting power per unit area now reaching the surface.
Three charged particles are arranged into a triangle. The charge on the particle located (4.0cm, 3.0cm) is 5nC. The charge on the particle at the origin is -3nC, and the change on the particle located at (4.0cm, 0cm) is +6nC. Determine the magnitu..
A tree falls on a bicycle path 40 m ahead of a cyclist traveling at 16 m/s, how far from the fallen tree will she be when she stops
A student weighing 800 N crouches on a scale and suddenly springs vertically upward.His roommate notices that the scale reads 900 N, With what acceleration does he leaves the scale
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 64 kg person develops a power of 65W throughout a race, how fast is the person running? Assume that a running step is 1.5 m long.
A car is traveling at 61.6 km/hr on a flat, concrete highway. If the brakes are applied such that skidding occurs, the kinetic coefficient of friction between the road and tires is 0.802. If anti-lock brakes are properly applied then no skidding o..
An 84.6-kg climber is scaling the vertical wall of a mountain. His safety rope is made of nylon that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
You are designing a pendulum clock whose period can be adjusted by ±10% by changing the length of the pendulum. Determine the range of change of length which provide this flexibility in the period
A student is trying to decide what to wear. His bedroom is at 17.0°C. His skin temperature is 36.0°C, Find the net energy loss from his body by radiation in 10.7 min
Determine the new planets mass density to earth mass density
How far from a 53.6 mm focal-length lens must an object be placed if its image is to be magnified 2.12X and be real.
At rest, the car's horn sounds at a frequency of 455 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 427 Hz. What is speed of the car.
A bag of cement of weight 375 N hangs from three wires as suggested in Figure P5.18. Two of the wires make angles θ1 = 55.0° and θ2 = 25.0° with the horizontal. If the system is in equilibrium, find out the tensions in the wires.
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