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A uniform disk with a mass of 2kg and a radius of 0.15m is rotatingwith a angular speed of 12 rad/s about an axis through its center perpendicular to the plane of the disk (I=(1/2)mr2). What is the angular momentum of the disk in units of kgm2/s?
A photon has the same momentum as an electron moving with a speed of 1.83×105 m/s. What is the wavelength of the photon
A ball of mass 1.024 g and positive charge q =40.3microC is suspended on a string of negligible mass in a uniform electric field. We observe that the ball hangs at an angle of theta=15.0o from the vertical. What is the magnitude of the electric field..
Liquid water at 453K and 1002 kPA has an internal energy of 762 kJ/kg and a density of 890 kg/m^3 a) what is the enthalpy (per weight)? b) We change the state to 573K and 1500 kPA. The internal energy is now 2784 kJ/kg and the specific volume 169.7 c..
What work must a diesel engine in an 18.000kg truck do to increase its speedfrom 30. m/s to 40. m/s in 5.0 seconds? What average force did the engine exert
What is a unique characteristic of water between 0 and 4 degrees celcius - Need a question pertaining to heat and temperature dealing of course in physics.
When an electron undergoes a transition from a higher to lower state in singly ionized helium, how will the energy of the emitted photon compare with the analogous transition in hydrogen?
The bonds pays interest semiannually on June 30 and December 31. The bonds are issued to yield 5%. Illustrate what are the proceeds from the bond issue?
a length of metal wire has a radius of 5. x 10-3 m and a resistance of 0.1. when the potential difference across the
three successive resonance frequencies in an organ pipe are 1310 1834 and 2358 hz. a is the pipe closed at one end or
On December 27, 2004, astronomers observed the greatest flash of light ever recorded from outside the solar system. what was the average power output (in terms of P) of this magnetar
consider two planes separated by 10m one with a charge of 5cm2 and the other -5cm2. what is the magnitude of the
A 232-kg satellite is in circular orbit around the Earth and moving at a speed of 4.88 km/s. How much work must be done to move the satellite into another circular orbit that is twice as high above the surface of the Earth?
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