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Two spheres are cut from a certain uniform rock. One has radius 4.45 cm. The mass of the other is six times greater. Discover its radius.
A sprinter of mass 69.3 kg runs at a constant speed of 10.9 m/s in a straight line. Find the extra force the sprinter must exert on the ground
a candle 8.80 cm high is placed in front of a thin converging lens of focal length 40.0 cm. what is the image distance
When cars are equipped with flexible bumpers, they will bounce off each other during low-speed collisions, thus causing less damage. What is the speed of the lighter car just after collision
You have a string with a mass of 0.0133 kg. You stretch the string with a force of 9.81 N, giving it a length of 1.87 m. find the wavelength of the standing wave you create in the string
i explain how the earths geomagnetic field is created? hint be sure to include thedirection of the earths current.ii
The figure shows the light intensity on a screen behind a double slit. The slit spacing is 0.20 mm, What is the distance from the slits to the screen
A heat engine has a useful work output of 4.0 kJ and expels 8.0 kJ of exhaust energy in each cycle. what is the engine's thermal efficiency
A 250 g block of wood hangs from a light string 0.78 m long. The block is shot with a bullet of mass 4.2 g, what was the velocity of the bullet just before it hit the block
The biceps muscle is connected from the shoulder (scapula) to the radius bone at a point 5.0 centimeter from the below. Its contractions flex the arm. find the force exerted by the biceps of a 70 kilogram man holding a 2.0 kilogram sphere
A 0.20 kg mass resting on a frictionless surface is attached to a solid wall by means of a spring with and elastic force constant k of 5.0 N/m. calculate the maximum velocity experienced by the mass
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. How far from the dock does the boat reach the child
most species of fish have expandable sacs commonly known as swim bladders that enable fish to rise in the water by
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