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Question1
At rest, a light source emits 532 nm light.
(a) As it moves along a line connecting it and Earth, observers on Earth measure the wavelength to be 412 nm. What is the sources velocity and direction?
(b)Was it to move in opposite direction at the same speed, what wavelength would be seen?
(c)Was it to circle earth at the similar speed what wavelength would be seen?
Question2
A cube of ice is taken from the freezer at -5.5and placed in a 110 aluminium calorimeter filled with 305 of water at room temperature of 20.0. The last situation is observed to be all water at 15.0. What was the mass of cube?
Question3
The discovery of a star orbiting the center of our galaxy with a 15-year period has led to the result that mass of the giant black hole at the center of our galaxy is about 3 million times that of the Sun. with ratios; compute the semi major axis of the star’s orbit. Translate the answer to light-years.
A hollow, conducting sphere with an outer radius of 0.260m and an inner radius of 0.198m has a uniform surface charge density of +6.70×10^?6 C/m^2. What is the new charge density on the outside of the sphere
A photon of green light (wavelength = 532 nm) and a Ping-Pong ball (mass = 2.90 10-3 kg) have the same momentum
Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.013 m. Water enters the hydrant through an underground pipe of radius 0.094 m. In this pipe the water has a speed of 3.2 m/s.
A 601N athlete standing on one foot on a very smooth gym floor lifts his body by pivoting his foot upward through a 30.0? angle, What is the tension in the Achilles tendon
an RLC series circuit consists of a 24 V (rms) 0.50 Hz AC power supply, a 25 ohm resister, a 10 H inductor, and a 0.050 F capacitor, what is the rms current through the inductor
The dial on an FM radio contains numbers ranging from about 88 to about 108. What is the corresponding range of wavelengths
the index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), what is the angle of refraction for each wavelength
question1-what would be direction of the surface winds that would exist in the tropics mid-latitudes and polar regions
A ball is thrown upward from the top of a building at an angle of 30.0° to the horizontal and with an initial speed of21.0m/s. Find the horizontal range of the ball
A second oil is then poured into the right arm until the two levels are even. A small object (density 0.640 g/cm3 ) is dropped into the second column of oil and it is found to float with 20.0% of its volume above the surface.
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.40×106N , What is the total work done by the two tugboats on the supertanker
A hydrogen atom is in its second excited state, n=3. Find the total energy of the atom
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