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1. A superwoman is travelling in a rocketcroft at a speed of 1.5 x10^ 8 m/s is holding a coffee cup that is 20 cm tall and 8 cm in diameter. Her twin who lives on the Earth measures the height of the cup. She finds that the height of the cup is
2. What is the width of the cup in the direction of the travel?
Find out the speed of the satellite
Calculate the horsepower needed for a 1,114 kg car to climb up to an altitude of 1,097.91 m from sea level in 1.81 hours
A 150 g aluminum cup contains 150 g of water and both are at 13 C. If you add 150 g of hot water at 90 C what is the final temperature at thermal equilibrium? How much hot water at 90 C needs to be added to achieve a final temperature of 44 C?
A soccer ball is kicked with an initial horizontal velocity of 18 m/s and an initial vertical velocity of 21 m/s, How far from where it was kicked will the ball land
For a camera equipped with a 51-mm focal-length lens, How far is the object from the image on the film
A long solenoid of r =1cm and lnght l=1m is inserted into another long solenoid of radius r=3cm, Find the mutual inductance of the two solenoids
A boy is trying to retrieve his toast from a toaster using a metal knife. He touches one of the wires inside, which is connected to 120 V. What is the current through his body
An airplane pilot wishes to fly due west. A wind of 70.0km/h is blowing toward the south, What is the speed of the plane over the ground
The coil of a galvanometer has a resistance of 18.6 ?, and its meter deflects full scale when a current of 6.48 mA passes through it. What is the maximum current that this ammeter can read
At one instant a bicyclist is 53m due east of a park's flagpole, going due south with a speed of 12m/s. Then 37s later, the cyclist is 53m due north of the flagpole, going due east with a speed of 12m/s. For the cyclist in this 37s interval.
What least horsepower must a motor have to be able to drag a 280 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
A spherical mirror is to be used to form an image 5.20 times the size of an object on a screen located 4.20 m from the object, What is the required radius of curvature of the mirror
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