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The star Sirius has a surface temperature of 9750 K and aradius 2.4 times larger than the Sun's.
a) What is the ratio of the flux (energy per square meter persecond) emitted from the surface of Sirius to the flux emittedfrom the surface of the Sun?
b) What is the ratio of the luminosity of Sirius to the luminosity of the Sun?
A force vector points at an angle of 64.9 ° above the +x axis. It has a y component of +276 Newton's (N). Find out (a) magnitude and (b) x component of the force vector.
What is the greatest possible distance from the wall
A ball is rolled off a table that is 0.481 m above the floor. The ball is rolling with a velocity of 1.8 m/s as it goes off the edge of the table. how long does it take each ball to reach the ground
The deflection plates in an oscilloscope are 10cm by 2cm with a gap distance of 1mm. A hundred volt potential difference is suddenly applied to the initial uncharged plates through a 1000 ohm resistor in series with the deflection plates.
A grandfather pendulum has a simple brass rod of length L. The temperature in the house quickly drops to 16.0 oC just after 10PM, and stays at that value. By how much does the length of the pendulum change
An athlete crosses a 28 m wide river by swimming perpendicular to the water current at a speed of 0.8 m/s relative to the water. What is the speed of the swimmer with respect to a friend at rest on the ground
Charge q is moving at constant speed v along the positive x-axis, Find the Cartesian components of the magnetic field at a point (x,y,z) for t > 0
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a highest of 90cm, what was the speed of the bullet at impact with the block.
An athlete executing a long jump leaves the ground at a 35.0? angle and travels 7.90m, If this speed were increased by just 5.0%, how much longer would the jump be
Two conductors made of the same material are connected across the same potential difference. Conductor A has twice the diameter and twice the length of conductor B. What is the ratio of the power delivered to A and to the power delivered to B?show yo..
A body of mass 5.0 kg is suspended by a spring, which stretches 10 cm when the mass is attached. What is its position as a function of time
Assume that light of a single color, rather than white light, passes through two slits 0.50 mm apart, determine the light's wavelength
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