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Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 4.7t0.8 - 2.9t + 19, with t ? 0, m in grams, and t in seconds. (a) At what time is the water mass greatest, and (b) what is that greatest mass? In kilograms per minute, what is the rate of mass change at (c) t = 1.8 s and (d) t = 5.4 s?
A luminous point is moving at speed Vo toward a spherical mirror of radius R along its axis. What is the speed at which the image is moving
Fleas are notorious jumpers, reaching heights of nearly 20 cm, roughly 130 times their own height. Assuming that the flea acquires its initial velocity in leaving the ground over a distance of half its height, find the average acceleration the fle..
Calculate the distance Michael will travel if he maintain an average speed of 2.7 m/s for 7.2 seconds
You are on an airplane traveling 30° south of due west at 150.0 m/s with respect to the air. The air is moving with a speed 38.0 m/s with respect to the ground due north. What is the heading of the plane with respect to the ground
The active element of a certain laser is an ordinary glass rod 21.6 cm long and 1.22 cm in diameter. Calculate its increase in diameter
A 3.70g bullet moving at 250m/s enters and stops in an initially stationary 3.50kg wooden block on a horizontal frictionless surface, How much work was done in stopping the bullet
When viewed in a spherical mirror, the image of a setting sun is a virtual image. What is the radius of curvature of the mirror
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 11-g nail
q1. points a and b have electric potentials of 320 and 160 respectively. when an electron released from rest at point a
a segment of wire of total length 2m is formed into a circular loop having 5 turns if the wire carries a 1.2A current determined the magnitude of the magnetic field at the center of the loop
What is the block's distance from equilibrium as the speed are 36 cm/s? What is block's position at t=1.0 s.
A large punch bowl holds 3.80kg of lemonade (which is essentially water) at 20.0?C. A 5.10×10?2-kg ice cube at -10.0?C is placed in the lemonade. What is the final temperature of the system
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