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Assuming that the value of x and y are 40degree and 50degree respectively calculate for the part y
1. A person on crutches weighs 170 lb. Each crutch makes an angle of
22 degrees with the vertical (as viewed from front). Half of the person’s weight
is supported by crutches, the other half by the vertical forces exerted by the ground on his feet. Assuming he is at rest and the force exerted by the ground on the crutches acts along the crutches, determine the
magnitude of the compression force supported by each crutch.
2. A man whose height is 130 centimeters lies on a board supported by two scales. One scale is under the top of his head and one beneath the bottom of his feet. The two scales read, 33 kilograms and 30 kilograms, respectively. How far is the center of gravity of this man from the bottom of his feet?
assuming that the value of x and y are 40degree and 50degree respectively calculate for the part y
shield concept of microwaves in microwave oven experiment
For the vectors and in the figure shown, use the method of components to find the magnitude and direction of
(a) the vector sum +
(b) the vector sum +
(c) the vector difference -
(d) the vector difference -
The laws of optics also apply to electromagnetic waves invisible to the eye. A satellite TV
dish is used to detect radio waves coming from orbiting satellites. Why is a curved reflecting
surface (a “dish”) used? The dish is always concave, never convex; why? The actual radio receiver
is placed on an arm and suspended in front of the dish. How far in front of the dish should it be
placed?
Calculate the electric field experienced by a negative test charge given that source charge is +6.78 𝑥 10−15𝐶 and 7.9 𝑥 10−19𝑚 as the distance from the source charge
If the current in a vertical wire is directed upward, what is the direction of the force in this
wire if it is placed in a magnetic field which is horizontal and directed towards north?
If the force between +17μC charge and -23μC charge is 0.25671 N, what is the distance between them?
Dean is slowing down on his skateboards. He starts at a speed of 5.5 m/s and
slows to 1.0 m/s over a time of 3.0 seconds. What is Dean's acceleration?
#339914 on Dec 2023