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An astronaut arrives at a new planet, and gets out his simple device to decide the gravitational acceleration there. Prior to this arrival, he noted that the radius of the planet was 6940 km. If his 0.600-m-long pendulum has a period of 1.0 s, what is the mass of the planet?
A two meter long string is wrapped around the outside edge and the ring is dropped allowing the string to unwind as the ring falls. Find the speed of the ring after it reaches the end of the string
A lead rod (a = 29x10-6 K-1) has a circular cross-section of 0.500 cm radius. At what temperature both pieces have zero margins
two electrically charged objects are placed at 6 cm away from each other. each object has an electrical charge of 1 uc
q1. a curve of radius 40 m is banked for a design speed of 100 kmh. if the coefficient of static friction is 0.30 wet
A Bead with a mass 10g can slide without friction on a circular motion massless hoop that is in a vertical plane and has a radius of 5 cm. The hoop rotates at a constant rate of 4rev/s about a vertical diameter.
A stunt man whose mass is 70 kg swings from the end of a 4.40-m long rope along the arc of a vertical circle. Assuming that he starts from rest as rope is horizontal, find out the tensions in the rope that are required to make him follow his circu..
Suppose you weigh 738 N, and when you stand on one foot, your weight is spread out over an area of 1.600×10-2 m2. What is the pressure does your foot exert on the floor
Larger wavelengths diffract more than smaller wavelengths. how long in years would it take the person to move a distance of one meter
Calculate the maximum gravity anomaly at ground level over a buried anticlinal structure, modelled by a horizontal cylinder with radius 1000 m and density contrast 200 kg/m^3
A power supply maintains a potential difference of 81.5 V across a 1.01-k? resistor. What is the current in the resistor in milliamperes?
A carbon steel piano wire 1.4 m long with a cross-sectional area of 2 × 10?6 m2 and mass 0.1 kg is stretched 23 mm. Determine the speed of transverse waves on the string. For carbon steel, Young’s modulus is 2 × 1011 N/m2.
Communications satellites are used to bounce radio waves from the earth's surface to send messages around the curvature of the earth. In order to be available all the time, they must remain above the same point on the earth's surface and must move..
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