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A proton (mass: 1.67 × 10-27 kg) moves in a one-dimensional electrical potential (17 mV/m^2)x^2 . What is the frequency of oscillations of the proton?
A train is traveling up a 4.3 incline at a speed of 2.20 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily? How f
With what force should the second crewman pull so that the net force of the two crewmen is in the forward direction?
There is an oscillating simple pendulum slowing down. Assuming time starts when the pendulum is released, find an equation for the angle as a function of time. (Note: you must include damping for fu
A 2.00kg block hangs from a spring. A 300g body hung below the block stretches the spring 2.00cm farther. (a) What is the spring constant? (b) If the 300g body is removed and the block is set into
Calculate the magnitudes of (a) the force of friction on the bicycle from the road and (b) the net force on the bicycle from the road.
The density of air is 0.50 kg/m3 at 8.0 km and 0.73 kg/m3 at 4.0 km. Assume that the airplanes have the same effective cross-sectional area and drag coefficient C.
If the final speed of the sand bag is 0.34 m/s, what is the magnitude of the force with which they pushed?
A force of magnitude 7.50 pushes three boxes with masses m1= 1.30 kg, m2= 3.20kg and m3= 4.90 kg Find the magnitude of the contact force between boxes 1 and 2 and find the magnitude of the contact f
For a sample with a quench rate of 5.5 degrees C/sec, what kind of steel gives a Rockwell hardness of C25 at this cooling rate? Please show your work.
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.41×105 , its speed is 29.1, and the net braking force is, what is its speed 6.51 later? How far h
Typical household currents are on the order of a few amperes. If a 1.54A current flows through the leads of an electrical appliance, how many electrons per second pass through it? (in electrons per
Can hydrophobic interactions be rigorously treated as additive (Newtonian) forces? Explain why in terms of N-body contribution of dGhyd (delta gradient of hydration) and in terms of solute effects o
What is the current passing between the electrodes? Express your answer in milliamperes to three significant figures. (in mA) What is the direction of the current in the ionic solution? Away or towa
The woman pushes on the man with a force of 55 N due east. Determine the acceleration (magnitude and direction) of (a) the man and (b) the woman.
The electron's acceleration is due to two electric forces parallel to the x axis: = 9.22 x 10-17 N, and , which points in the -x direction. Find the magnitudes of (a) the net force acting on the ele
The student on the right has a mass of 44 kg and can throw the ball with a relative speed of 11 m/s. (Assume there is no friction between the ice and the sleds and no air resistance.)
A particularly beautiful note reaching your ear from a rare Stradivarius violin has a wavelength of 39.1 cm. The room is slightly warm, so the speed of sound is 344 m/s. If the string's linear densi
The electron is moving along the x axis with the velocity along the positive x direction and the wire lies in the y-z plane and is parellel to the y axis. What is the direction of the force on the e
what minimum area should the plates of the capacitor have to obtain a capacitance of 7.0 multiplied by 10-2 µF and to ensure that the capacitor will be able to withstand a potential difference
A component with a 44 Ohm resistor is rated for use at power levels not exceeding 2,451 mW. How much current can safely flow through the component? Express the answer with two decimal places.
A 76 W light bulb with a resistance of 175 Ω is connected to a power supply with a 117 V. What is the internal resistance of the power supply? Express the answer with one decimal place.
A motorcycle has a constant acceleration of 4.93 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its sp
A ball is tied to the end of a cable of negligible mass. The ball is spun in a circle with a radius 2.00 m making 7.00 revolutions every 10.0 seconds. What is the magnitude of the acceleration of th