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The closest star to our solar system is Alpha Centauri, which is4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earthtravels toward the star. How much time would elapse on a clock on board the spaceship?
A) 3.23 yB) 4.40 yC) 5.15 yD) 5.38 y
An uncharged capacitor and a resistor are connected in series to a source of emf. If emf = 6.00 V, C = 21.0 µF, and R = 100 ?, evaluate the maximum charge on the capacitor
In a physics lab experiment, a spring clamped to the table shoots a22 {\rm g} ball horizontally. When the spring is compressed 22 {\rm cm}, the ball travelshorizontally 5.2 {\rm m} and lands on the floor1.3 {\rm m} below the point at which it left..
A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, What is the work done by the field on the electron
At t = 0, a particle leaves the origin with a velocity of 9 m/s in the positive y direction and moves in xy plane with a constant acceleration of (-2 i -4 j) m/s2. At t = 1 s, what is the velocity of particle in the x direction.
A bucket in an old well is hoisted upward by a rope which winds up on a cylinder having a radius of 0.050 m. How many rev/s must the cylinder turn
Two identical, small insulating balls are suspended by separate 0.36-m threads that are attached to a common point on the ceiling. obtain the tension in the threads
Block B in the figure weighs 760 N. The coefficient of static friction between block and table is 0.28; angle ? is 27°; Find the maximum weight of block A for which the system will be stationary
A curve is banked at an angle of 30 degrees with respect to the horizontal. what is the ideal speed for a motorist to take the curve when it is covered by glare ice
a spring without mass has natural length lo. one end is stuck to a fixed point and the other attached to a mass m. the
The potential difference between the plates of a capacitor is 247 V. Midway between the plates, a proton and an electron are released. find the initial speed of the proton
A parachutist bails out and freely falls 50 m. Then the parachute opens, and thereafter she decelerates at 1.8 m/s2. At what height does the fall begin
A mass-spring system oscillates with period of 0.23 sec. The spring's spring constant k = 450 N/m. What mass is attached to the spring
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