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An aluminum cup contains 225 gram of water and a 40 gram copper stirrer, all at 27°C. A 410 gram sample of silver at an initial temperature of 90°C is located in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Compute what the mass of the aluminum cup.
___________g
What is the change in length of the rope whilst the skier has the acceleration whose magnitude is 0.65 m/s2.
A pitcher throws a 0.140 kg baseball, and it approaches the bat at a speed of 35.0 m/s. The bat does Wnc = 75.0 J of work on the ball in hitting it. find the speed of the ball after the ball leaves the bat
you hear a sonic boom of a high speed jet plane exactly 2.90 s after it passes directly overhead in level flight. At the time you hear the boom, how fast is the plane traveling
The centers of a 11kg lead ball and a 100g lead ball are separated by 9 cm. what is the ratio of this gravitational force to the weight of the 100 g ball.
A 58 ice cube can slide without friction up and down a 28 slope. The ice cube is pressed against a spring at the bottom of the slope, When the ice cube is released
A cable lifts a 990 kilogram elevator at a fix velocity for a distance of 37 meter. Find the work done by the elevator weight
The gearshift lever AB for the transmission of a sports car has position vector r whose line of action passes through points A and B. The driver applies the force F to the knob B of the lever to shift gears. Find out the magnitude of the component..
philippine aviation design calls for a lift due to the net force of moving air on the wing of about 2000n per m2 of
A metal sphere hangs from a string and has 4 kg of mass. The sphere has a charge of +2.3 µC. What is the electric force on the metal sphere if the magnitude of the electric field is 106 N/C
A small object carrying a charge of -6.00 nC is acted upon by a downward force of 19.0nN when placed at a certain point in an electric field. What would be the magnitude and direction of the force
The trap-jaw ant can snap its mandibles shut in as little as 1.1 x 10-4 second. Find the average angular velocity of one of the mandibles of the trap-jaw ant when the mandibles snap shut
A 121 cm length of string has a mass of 2.40 g. It is stretched with a tension of 6.80 N between fixed supports. What is the lowest resonant frequency of this string
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