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The mass m = 3.57 kg is sliding on the frictionless incline of angle 42.7 degrees. A force (F) = 3.24 N is applied horizontally. Determine the acceleration (a) in m/s^2 of the mass on the incline. Use g = 9.8 m/s^2, take parallel to the plane abd up the plane as positive. Express the answer to three significant digits. (FYI: Watch the signs)
A 3.5 g ping-pong ball rubbed against a wool jacket acquires a net positive charge of 1.5muC. Estimate the fraction of the ball's electrons that have been removed
A tetherball leans against the smooth, frictionless post to which it is attached, What is the force the pole exerts on the ball
Calculate the positron and electron beam energy needed to create a Higgs boson (mass 125GeV) in the CMS system
a 39 ohm resistor is connectes to a battery, a voltmeter reads 9.8 V. when the resistor is repaced with a 9.1 ohm resister. the voltmeter reading drops to 8.0 V.
A horse races once around a circular track in a time of 18.0 s, with a speed of 18.0 m/s. Illustrate what is the radius of the track? Give your answer in meters, but do not include units.
An 81.0 N box is pulled 22.0 m up a 30° incline by an applied force of 102 N that points upward, parallel to the incline. calculate the change in the kinetic energy of the box
A 7.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.350?. How big is the pulling force
State the condition that is necessary for a charge to move in a wire. Relate the definition of electric current to the units of current. Explain the cause of resistance and how the resistance of a wire can be determined.
implies a serious limit to such detection. (Note also that the uncertainty is greater if there is an uncertainty in the propagation speeds of the S- and P-waves).
The distance between the lenses in a compound microscope is 18 cm. The focal length of the objective is 1.5 cm. what must be the focal length of the eyepiece
What is the magnitude of vertical component of its velocity as it strikes the ground.
Determine the force acting on an electron moving at 2.5 x 10^5 meters per second when it enters a magnetic field perpendicular to its direction of motion
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