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A car weighing 8800 Newton moves along a level highway with a speed of 100 km/h. The power of the engine at this speed is 78 kilowatt. The car encounters a hill inclined at an angle of 9.9o with respect to the horizontal. If there is no change in the power of the engine, and no change in the resistive forces acting on the car, compute the new speed of the car on the hill?
Answer in units of km/h.
A rod 14.7 cm long is uniformly charged and has a total charge of−18.6 μC. Determine the magnitude of the electric field along the axis of the rod at a point 55.5612 cm from the center ofthe rod. The Coulomb constant is 8.98755 × 109 N ·m2/C2.
two capacitors c1 22.0 microf and c2 40.0 microf are connected in series and a 15.0 v battery is connected across
In very cold weather, a significant mechanism for heat loss by the human body is energy expended in warming the air taken into the lungs with each breath. How much heat is lost per hour if the respiration rate is 20 breaths per minute
A light string that does not stretch changes from horizontal to vertical as it passes over the edge of a table. The string connects m1, a 3.4 kg block, originally at rest on the horizontal table at a height 1.27m above the floor, to m2, a hanging ..
A train moving at a constant speed of 58.0 km/h moves east for 32.0 min, then in a direction 46.0° east of due north for 24.0 min, and then west for 63.0 min. What is the average velocity of the train during this run?
A simple pendulum consists of a ball connected to one end of a thin brass wire. Determine the change in the period of the heated pendulum
A bungee cord is stretched between two poles with a force of 407 N. What is the velocity of a wave on this bungee cord
A gas undergoes two processes. In the first, the volume remains constant at 0.200 m3 and the pressure increases from 2.00 105 Pa to 5.10 105 Pa. Find the total work done by the gas during both processes
The water is near freezing in temperature. Typically a human can only swim in such water for about 300 seconds (or 5 minutes) before hypothermia sets in. Calculate the time the explorer spends in the water
A film of MgF2 (n = 1.38) having thickness 1.68 10-5 cm is used to coat a camera lens. What are the three longest wavelengths that are intensified in the reflected light
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.21 kg, what is the velocity of the ball after the collision
A wire carrying a 29.0 A current passes between the poles of a strong magnet perpendicular to its field and experiences a 2.17 N force on the 4.00 cm of wire in the field
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