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A binary star system has two stars, each with the same mass as our sun, separated by 1.20×1012m. A comet is very far away and essentially at rest. Slowly but surely, gravity pulls the comet toward the stars. Suppose the comet travels along a straight line that passes through the midpoint between the two stars.
What is the comet's speed at the midpoint?
What is the coefficient of static friction among the coin and the turntable? Express your answer using two significant figures.
A young woman buys a sports car that can accelerate at the rate of 5.47m/s2. She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 1.47s before Kathy. Stan ..
A constant horizontal force Fa pushes a 3.70 kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. it gives the package's x and y velocity components versus time t. (The vx axis is marked in increments of 1.2..
Find the work done by this force on the particle and the final speed of the particle as it moves along a path.
An airplane flies 200 km due west from city A to city B and after that 295 km in the direction of 26.5° north of west from city B to city C.
A rifle is aimed horizontally at a target 58 away. The bullet hits the target 2.5 below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
A beam of electrons is accelerated from rest through a potential difference of 0.110kV and then passes through a thin slit, How wide is the slit
A Father pulls his sons across the son on a sled. The children and sled together weigh 550-N. The father pulls the sled with a force of 400-N at an angle of 40 degrees above the horizontal. Avoiding friction, determine out the acceleration of the ..
In a railroad yard, a 3.5×10^4 kg boxcar moving at 6.0 m/s is stopped by a spring-loaded bumper mounted at the end of the level track
A copper telephone wire has essentially no sag between poles 20.5 meters apart on a winter day while the temperature is -15.5° C. How much longer is the wire on the summer day when the temperature is 27.0° C.
As you walk across a synthetic-fiber rug on a cold, dry winter day, you pick up an excess charge of -56?C, What is the charge on the rug as a result of your walking across it
Find out the mutual inductance per unit length between two long solenoids, one inside the other, whose radii are r_1 and r_2 and whose turns per unit length are n_1 and n_2.
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