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A mass m slides down a frictionless plane that is inclined at angle θ. Show, using the method in Section 5.3, that the normal force from the plane is the familiar mg cos θ.
An 7.17 kg block drops straight down from a height of 1.21 m, Find the maximum compression of the spring
A rifle is aimed horizontally toward the center of a target 100 maway. If the bullet strikes 10 cm below the center, what is the velocity of the bullet
The total electric flux from a cubical box 11.0cm on a side is 1580 N*m^2/C. what is the charge on the enclosed box
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 1.5rad/s2. What is the tangential acceleration of the discus thrower at this point
a compound pendulum mass m is at rest hanging freely from a point o distance l from its center of gravity g. it has a
A block with mass mA = 15.0kg on a smooth horizontal surface is connected by a thin cord that passes over a pulley to a second block with mass mB = 4.5kg which hangs vertically. Determine the magnitude of the acceleration of the system
A 180g air-track glider is attached to a spring. The glider is pushed in 12.4cm and released. A student with a stopwatch finds that 12.0 oscillations take 12.5s . What is the spring constant?
Light having a free space wavelength of ?o = 500 nm passes from vacuum into diamond (nd = 2.4). find the wave's speed and wavelength in the diamond
Estimates is the acceleration of the object.
A long, rigid conductor, lying along the x axis, carries a current of 4.0 A in the negative direction. A magnetic field B is present, given by B = 2.5i + 8.5x2 j , with x in meters and B in mT. Calculate the k-component of the force on the 2 m segmen..
What is the magnitude of the electric field between two parallel plates 6.1mm apart if the potential difference between them is 150V
A shop sign weighing 230 N is supported by a uniform 115 N beam as shown in Fig. 9-54. find the vertical forces exerted by the hinge on the beam
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