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a. If a dog on a lead is held at 45° to the horizontal and exerts a pulling force of 180N between the dog and its owner, what are the horizontal and vertical components of the force?
b. A breakdown truck has to tow away a lorry. If the tension in the cable is 2500N, and if the cable makes a 55° angle with the horizontal, what are the horizontal and vertical components of the force?
You are on a swing with a chain 5.19 m long. If your maximum displacement from the vertical is 18.1°, how fast will you be moving at the bottom of the arc
1 to work on your car at night you use an extension cord to connect your work light to a power outlet near the door.
A piece of wood with a density of 769 kg/m3 is tied with a string to the bottom of a water-filled flask.
A point source of light is 200 cm below the surface of a body of water. Find out the diameter of the circle at the surface through which light emerges from the water.
There are two coherent microwave sources in the x-y plane. These sources are emitting in phase at a wavelength of ? = 1.00 cm. where is the first source located on the y axis
WPHY AM Radio transmits on a frequency of 970 kHz, omnidirectionally, with a power of 20 kW. What is WPHY's intensity where you live
A common flashlight bulb is rated at 0.30 A and2.8V (the values of the current and voltage under operating conditions). what is the temperature of the filament when the bulb is on
a ball is thrown vertically upwards from a point of 1.5m above the ground with an initial velocity of 30 ms and g
The temperature of a 0.0500 kg ingot of metal is raised to 200C and the ingot is dropped into a light, insulated beaker containing 0.400 kg of water initially at 20 C. If the final equilibrium temperature of the mixed system is 22.4 C , find the s..
In this section suppose the temperature is 20oC unless directed otherwise. At 28 meter from a sound source, the intensity level is 68 dB. Determine what the level at distance of 302 meter
As the captain of the scientific team sent to Planet Physics, one of your tasks is to measure g. You have a long, thin wire labeled 1.41g/m and a 1.30kg weight. You have your accurate space cadet chronometer but, unfortunately, you seem to have fo..
A volleyball is spiked so that it has an initial velocity of 16.5 m/s directed downward at an angle of 53.1 ° below the horizontal. determine the horizontal component of the ball's velocity
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