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A person is standing at the edge of the water and looking out at the ocean (see figure). The height of the person's eyes above the water is h = 1.8 m, and the radius of the Earth is R = 6.38 x 106 m. (a) How far is it to the horizon? In other words, what is the distance d from the person's eyes to the horizon? (Note: At the horizon the angle between the line of sight and the radius of the earth is 90°.) (b) Express this distance in miles.
The wheel of a car has a radius of .350 m. the engine of the car applies a torque of 295 Nxm to this wheel that does not slip against the road surface.
An electric motor rotating a workshop grinding wheel at a rate of 93 rev/min is switched off. Assume the wheel has the constant negative angular acceleration of magnitude 2rad/s2.
Draw vectors indicating the normal force. suppose that the weight of the femur is negligible compared to the applied downward force.
A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
As shown in the figure, sunlight is coming straight down (negative z-direction) on a solar panel (of length L = 1.51 m and width W = 0.930 m) on the Mars rover Spirit.
A flea pulls on a puck with force 7 microN at an angle of 30?. Another flea pulls on the puck with force 2 microN at an angle of -60?.
A galvanometer whose full scale current is 150amps and coal resistance is 75ohms is used with a 1.50 ohms shunt resistor to make an ammeter. what is the largest current that can be measured by the ammeter.
The wavelength of the waves in seawater is 4.80 x10-4 m. While the generator is directed downward, an echo reflected from the ocean floor is received 10s later.
What is the wavelength of the waves produced on the wire.
Steam can cause more serious burns than water at the same temperature. Here we examine this effect quantitatively, noting that flesh becomes badly damaged when its temperature reaches 50.0 C a)Calculate the heat released as 13.0g of liquid water a..
What is the potential difference measured by voltmeter
A car is driven 225 km west and then 78 km southwest (45 degrees). What is the displacement of car from the point of origin (magnitude and direction).
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