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Listed below are the forces that were applied to the cart in these three runs. Run Force (N) 1 (diamonds) 2.41 2 (triangles) 1.35 3 (circles) 3.37 Use Newton's second law to estimate the mass of the cart in kg from this set of data.
Cooling water from a river flows through the condenser (the low-temperature heat exchanger) at the rate of 1.2×108L/h (?30 million gallons per hour). If the river water enters the condenser at 18?C, what is its exit temperature
A softball pitcher throws a ball straight upward as hard as she can. According to your stopwatch, What is the maximum height reached by the ball
One gallon of paint (volume = 3.78 10-3 m3) covers an area of 20.2 m2. What is the thickness of the fresh paint on the wall
In a hydraulic system a boy of mass m is standing on one of the movable positions that is a disc of radius R, what is the pressure in the hydraulic fluid
You are testing a new amusement park roller coaster with an empty car with mass 113 kg. calculate how much work is done by the friction
A hard-boiled egg of mass 53.0g moves on the end of a spring with force constant 25.6 N/m. Calculate the magnitude of damping constant
the work being performed in this lab serves to solidify our understanding of how a magnetic field around a ring behaves
A coil with an inductance of 14.5 H and a resistance of R = 4.0 ohms is suddenly connected to a resistanceless battery with E = 184.2 V. What is the equilibrium current
In very cold weather, a significant mechanism for heat loss by the human body is energy expended in warming the air taken into the lungs with each breath. How much heat is lost per hour if the respiration rate is 19.0 breaths per minute
q1. a 19 kg box slides 4.0 rm m down the frictionless ramp shown in the figure then collides with a spring whose
Suppose you could pack neutrons (mass = 1.67 × 10-27 kg) inside a small ball of radius 0.026 m in the same way as neutrons, Approximately how many neutrons would fit inside the ball
A steel rod of mass m and length L has the linear expansion coefficient X. It is standing vertically and supports a box of mass M on its top. what is the work done by the rod
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