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A mass m hangs from a cable tied to two other cables connected to a support. The upper cables make angles theta1 and theta 2 with horizontal. What is the sum of the horizontal components of the tensions? Determine the magnitude of T1 in terms of T2?
A ball is thrown toward a cliff of height h with a speed of 30m/s and an angle of 60? above horizontal, What was the maximum height of the ball
A whale swims due east for a distance of 1.5 km, turns around and goes due west for 5.7 km, and finally turns around again and heads 4.5 km due east. (a) What is the total distance traveled by the whale? km (b) What are the magnitude and direction..
compass needle points 25 degrees E of N outdoors. However, as it is placed 17 cm to the east of a vertical wire inside a building it points 61 degrees E of N. What is the magnitude of the current in the wire? The earth field there is 0.50X10^-4 T ..
Please show work so I can see all the steps. A metallic sphere initially has a net charge of +4.0 nC. What is the new net charge on the sphere
makes an angle of 35.2o with the horizontal. In part b the person is looking at the top of the antenna, determine How tall is the antenna
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.1 m/s. What minimum initial speed should the puck have been given so that it reached the teammate
q1. all through its evolution a star of 1 solar mass the mass of our sun expands to 3.33 times its original radius.
Two bars of identical mass are at 32 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J/(kg · C°).
A 4.4-nF parallel plate capacitor with a sheet of Mylar (? = 3.1) filling the space between the plates is charged to a potential difference of 180 V and is then disconnected. (The initial capacitance including the dielectric is 4.4 nF.)
A 0.750kg block is attached to a spring with spring constant 16.5N/m . While the block is sitting at rest, What are the amplitude of the subsequent oscillations
In a particular Millikan oil-drop apparatus, the plates are 2.25 apart. The oil used has a density of 0.845 , how many excess electrons did it contain
In a period of 1.0 s, 5.0 x10^23 nitrogen molecules strike a wall of area 7.80 cm2. If the molecules move at 270 m/s and strike wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4..
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