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When displaced from equilibrium by a small amount, the two hydrogen atoms in an H2 molecule are acted on by a restoring force Fx = k1x with k1 = 530 N/m. Calculate the oscillation frequency f of the H2 molecule. Use meff = m/2 as the "effective mass" of the system, where m in the mass of a hydrogen atom. Take the mass of a hydrogen atom as 1.008 u, where 1 u = 1.6611027 kg. Express your answer in hertz.
A person is 1.7 m tall. Where should he place the top of a mirror on the wall so he can see the top of his head? Assume his eyes are 4.5 cm below the top of his head. Find a minimal vertical distance from the level of the persons eyes to the top o..
A football kicker can give the ball an initial speed of 31 m/s. What are the (a) least and (b) greatest elevation angles at which he can kick the ball to score a field goal from a point 50 m in front of goalposts whose horizontal bar is 3.44 m above ..
What is the pressure change for water that flows through a steel pipe of diameter 0.15 m at a velocity of 2 m/s? If the flow were laminar regime what would be the pressure change? How much energy per mass is required to pump the fluid in turbulent..
A horizontal slingshot consists of two light, identical springs (with spring constants of 27.7 N/m) and a light cup that holds a 1.47-kg stone, determine the system's total mechanical energy
In a volcanic eruption, a 2400-kg boulder is thrown vertically upward into the air. Where will the fragment land
For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule had to reduce their speed from 2.76 E 4 m/s to 1.02 E 4 m/s. For how long did they have to fire their engine
Two boxes are connected by a cord running over a pulley as shown in Fig. 4-7. Box I of mass 8.0 kg rest on the top of the table; Calculate the acceleration of the system
The positron is a particle that has the same mass as the electron and carries a charge equal to +e. Calculate the energies of the five lowest energy states of positronium using the reduced mass
two infinitesimally small point charges of 2.0 microc each are initially stationary and 5.0 m apart. a how much work is
Determine the capacitance of a Teflon-filled parallel-platecapacitor having a plate area of 1.90cm2 and insulation thickness of 0.0100 mm. What is the maximum voltage that can be applied to the capacitor?
A 508.6 N window washer is standing on a uniform scaffold supported by a vertical rope at each end. the scaffold weighs 386.7N and is 3.11m long. assume the windo washer stands 1.26m from one end. what is the force on the farther rope? answer in u..
to better comprehend the magnitude of gravitational force between earth and the moon pretend gravity is turned off and
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