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A solid aluminum sphere has a radius of .50m and a temp of 75C. The sphere is completely immersed in a pool of water whose temis 25C. The sphere cools, while the water temp remains nearly 25C,bc it is a large pool. The sphere is weighed in the water immediately after being submerged and then again after cooling to25C.
1) Which weight is larger?
2) Utilize Archimedes' principle to find the magnitude of the dissimilarity BT the weights.
An individual is nearsighted; his near point is 17.0 cm and his far point is 53.0 cm. What lens power is needed to correct his nearsightedness?
A Ping-Pong ball with mass 6 g is attached by a thread to the bottom of a beaker. When the beaker is filled with water so that the ball is totally submerged, Determine the diameter of the ball
A diverging lens by focal length of -30cm is placed 15cm behind a converging lens with a focal length of 20 cm. Where will an object at infinity be focused and what is the right race tracing?
A vacuum cleaner is plugged into a 120-V socket and uses 3.0Aof current in normal operation when the back emf generated by the electric motor is 72V. Find the coil resistance of the motor.
Ten boxes, each 21.0 cm high and weighing180 N, initially are all side by side onthe floor. The boxes are lifted and placed in a vertical stack2.10 m high in a time interval of6.50 s. Compute the power necessary tostack the boxes.
Problem A small mirror is attached to a vertical wall, and it hangs a distance of 1.59 m above the floor. The mirror is facing due east, and a ray of sunlight strikes the mirror early in the morning and then again later in the morning.
Light of wavelength 517 nm in air enters a fishbowl full with water, and then exits during the crown-glass wall of the container. What is the wavelength of the light in the water? The refraction index for water is 1.333 and for crown-glass 1.52.
Find out the distance traveled (in meters) by the jet as the observer watches the nose of the jet cross from one side of the moon to the other.
A target in a shooting gallery consists of a vertical square wooden board, 0.300 m on a side and with mass 0.740 kg, What is the angular speed of the board just after the bullet's impact
A passenger walks from one side of a ferry to theother as it approaches a dock. What is the magnitude of the ferry's velocity relative to the water
If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? suppose the ball is a solid sphere of radius 3.7 and mass 0.14.
The momentum and the kinetic energy of particle Ais six timesand seven times the momentum and the kinetic energy of particle B, respectively. What is the ratioof the mass of particle A to that of particle B?
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