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A car is traveling around a horizontal circular track with radius r = 240 m at a constant speed v = 17 m/s as shown. The angle ?A = 16° above the x axis, and the angle ?B = 58° below the x axis.
1) What is the magnitude of the car's acceleration?
2) What is the x component of the car's acceleration when it is at point A
3) What is the y component of the car's acceleration when it is at point A
4) What is the x component of the car's acceleration when it is at point B
5) What is the y component of the car's acceleration when it is at point B
6) As the car passes point B, the y component of its acceleration is
A) Decreasing
B) Increasing
C) Constant
The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all di..
You are to program a robotic arm on the assembly line to move in a xy-plane. Its first displacement is; its second displacement is, of magnitude 6.51 and direction 62.7 measured in the sense from +x-axis toward -y-axis. The resultant of the two displ..
Assume we have an infinitely long wire carrying a current of 2-A. It is bent into an L-shape extending into positive infinities along the x- and y- axes. Find out the magnitude of the magnetic field at a point P with coordinates (0.3 m, 0.3 m).
The springs of a 1300kg car compress 6.00 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what would be the frequency of vibrations.
At what angle should a curve of radius 190 m be banked, so cars can travel safely at 32 m/s without relying on friction?
What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
Three equal point charges, each with charge 1.45?C, are placed at the vertices of an equilateral triangle whose sides are of length 0.650m
Solve the algebraic expression by using power rules.
While a certain rubber band is stretched a distance x, it exerts a restoring force of magnitude F=ax+bx^2, where a and b are constants. The work completed in stretching this rubber band from x=0 to x=L is what.
A 12-kg box is free from the top of an incline that is 5.00m long and makes an angle of 40 degrees to the horizontal. A 60-N friction force impedes the motion of the box.
The minimum stopping distance for a car travelling at a speed of 30 {rm m/s} is 60 {rm m}, including the distance travelled during the driver's reaction time of 0.54 {rm s}.
In each cycle of its operation, a refrigerator removes 8 J of heat from the inside of the refrigerator and releases 22 J of heat into the room. How much work per cycle is necessary to operate this refrigerator.
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