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At a concert you sit 12 m directly in front of one of the two speakers on the front of the stage. The other speaker is 8 m from the first. What frequencies in the human hearing range will sound soft to you?
A canoe has a velocity of 0.54m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.52m/s east relative to earth.
The driver of a motorboat that can move at 10 m/s wishes to travel directly across a narrow strait in which the current flows at 5 m/s. At what angle upstream should the driver head the boat
A motorcycle has a constant speed of 24.0 m/s as it passes over the top of a hill whose radius of curvature is 131 m. The mass of the motorcycle and driver is 348 kg.
0.20g of hydrogen gas are held in a rigid container. The temperature of the gas is changed from 50 K to 80 K. How much heat is needed.
A frictionless spring of spring constant 500 N/m has one end attached to a verticalwall and the other end to a block of mass 2.0 kg, Find the amplitude and frequency of oscillation
What must be the thickness of the liquid layer if normally incident light with? = 504 nm in air is to be strongly reflected
Vector A has a magnitude of 8 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. (Using graphical methods), find (a) vector sum A + B and (b) vector diffe..
An object with a height of 42 cm is placed 2.3 m in front of a concave mirror with a focal length of 0.55 m. Find the location and magnification of the image produced by the mirror
A jogger accelerates from rest to 3.49 m/s in 2.40 s. A car accelerates from 21.0 to 31.8 m/s also in 2.40 s, Find the magnitude of the acceleration of the jogger
The average resistivity of the human body (apart from surface resistance of the skin) is about 5.5 ?·m. What is the resistance between the hands if the skin resistance is negligible
Block A weighs 40-lb. Block B weighs 80-lb. The coefficient of friction between both blocks and the surface is µ=0.3. Determine how far B travels before it stops
If the barge can only be pushed 18 cm deeper into the water before water overflows to sink it, how many 400 kg horses can it carry.
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