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Solve the problems below:
1. A force of 200.0 N is exerted on a 1,000.0 N object. The object moves a distance of 30.0 m. How much work was done on the car?
2. (a) How many horsepower is a 25.0 W lightbulb? (b) How many Watts is in a 1,250,000 hp aircraft engine?
3. Compare the kinetic energy of a car moving at 20.0 m/s to the kinetic energy of the same car moving at 25.0 m/s.
4. A small sports car and a pickup truck start coasting down a 10.0 m hill together, side by side. Assuming no friction, what is the velocity of each vehicle halfway down the hill?
Show Work....Please
Suppose 100 mg of gold (197 79 Au) foil are exposed to a thermal neutron flux of 1012 neutrons/cm2/s in a reactor. Calculate the activity and the number of atoms of 198Au in the sample at equilibrium [Thermal neutron activation cross-section for ..
A light ray in air is incident on a water surface at an angle of 27.7? with respect to the normal to the surface. What is the angle of the refracted ray relative to this normal
A capacitor of value C is connected across a battery of voltage V. The capacitor is fully charged. Find the new charge on the capacitor
Compare and contrast the concepts of Stability, Control, and Maneuverability in an aircraft design. Explain why Charles Lindberg was very happy with the lateral stability of the Spirit of St. Louis. Was it negative, neutral or positive?
An object is being acted upon by 3 forces and moves with a constant velocity. One force is 40N along the x axis , the second is 90 along the y axis. What is the third force
A particle at t1 = -2.0 s is at x1 = 3.4 cm and at t2 = 4.5 s is at x2 = 8.5 cm. What is its average velocity
A charge of 6.0 mC is placed at each corner of a square 0.100mon each side. Determine the magnitude and direction of the force on each charge
A car of mass M = 1100kg traveling at 60.0km/hour enters a banked turn covered with ice. What is the radius r of the turn if the angle = 20.0 degrees
What is the use of the fan blades in a commercial jet plane, what is its function?
Assume a stone is thrown from 45.0 meter above the ground at an angle of 30o below the horizontal. If it strikes the ground 57.0 meter away, Calculate the speed and the angle of the velocity vector with respect to the horizontal at impact
assuming the weight is evenly distributed.On a hot day in Las Vegas, an oil trucker loaded 37000 L of fuel. He encountered cold weather on the way to Utah, where the temperature was 23K lower than Las Vegas.
Verify Snell's Lam of refraction by tracing and measuring the direction of refracted light rays through a change in medium. If we replaced the water dish with a solid glass disk of the same shape, explain how your data would be different
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