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A 62 g Frisbee is thrown from a point 1.3 m above the ground with a speed of 15 m/s. When it has reached a height of 1.6 m, its speed is 11 m/s. What was the reduction in the mechanical energy of the Frisbee-Earth system because of air drag?
If the speed of sound is 1100 feet per second and a tuning fork oscillates at 440 cycles per second, what is the wavelength of sound produced.
The electric field in a region of space has the components Ey = Ez = 0 and Ex = (5.90 N/(C·m))x. Point A is on the y axis at y = 4.30 m, What is the potential difference (in V) VB - VA
What is the amount of the normal force on the charge on the surface in Newtons, when including both the weight of the object and the electric force on it?
Batteries are rated in terms of ampere-hours (A · h). For example, a battery that can produce a current of 3.00 A for 5.00 h is rated at 15.00 A · h.
Indicate the negative x direction by including a negative sign in the answer, but omit a sign for the positive x direction.
A 35-mm slide (picture size is actually 24 by 36 {mm) is to be projected on a screen 2.10 m by 3.15 m placed 5.30 m from the projector. What focal-length lens should be used if the image is to cover the screen? Answer to be in mm please.
Two mirrors meet at a 127° angle. If light rays strike one mirror at 40° as shown, at what angle ? do they leave the second mirror.
If the company is presently selling 45,000 units, but plans to spend an additional $108,000 on an advertising program, explain how many additional units must the company sell to earn the same net income it is now making?
The end point of a spring vibrates with a period of 1.9 seconds when a mass m is attached to it. When this mass is increased by 9.630×101 kg, the period is found to be 4.1 seconds. Find the value of m.
A -49nC charge is distributed uniformly along the x-axis from x= -1.2m to x= 4m. Consider a point at y= 1.9m on the y-axis, What is the total magnitude of the electric field at the point
A sealed tank containing seawater to the height of 11.10 m also contains air above the water at a gauge pressure of 3.20 atm. Water flows out from the bottom throughout a small hole.
A flat piece of glass covers the top of a vertical cylinder that is completely filled with water, What is the smallest value of the incident angle theta_a for which none of the ray refracts into the water
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