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Two ants race across a table 66 cm long. One travels at4.42 cm/s and the other at 3cm/s. When the first one crosses thefinish line, how far behind is the second one? Answer in units of cm.
A cylindrical fishing reel has a moment of inertia of I = 6.61E-4 kg*m2 and a radius of 3.98 cm. A friction clutch in the reel exerts a restraining torque of 1.47 N*m if a fish pulls on the line. What is the force of the fish on the line
a 1.0 kg object is moving with a constant velocity 2.0 m/s toward the north. what is the second force that acts on the object
The planet saturn has a mass of 5.69x10^26kg and a volume of 8.01x10^23m^3. Would Saturn sink or float in water Explain
On average, an electric water heater operates for 2.3 h each day. what is the cost of operating the heater
The blood flow rate through the aorta is typically 97 cm3/s, and a typical adult has about 5.2 liters of blood, what is the speed of blood as it flows through the aorta
It is desired to build a heat pump that has an output temperature of 31 °C. Calculate the maximum coefficient of performance for the pump when the input source is ground water at 8.1 °C
The force of attraction between a -20.0 ?C and +80.0 ?C charge is 4.00 N, What is the separation between these two charges
A 48.5 kg circus acrobat drops from a height of 1.62 meters straight down onto a springboard with a force constant of 7.95 103 N/m, By what maximum distance does she compress the spring
An unknown material has a normal melting/freezing point of -20.6 °C, and the liquid phase has a specific heat capacity of 143 J/(kg C°). What is the latent heat of fusion of the unknown material
A 8.51 -m ladder with a mass of 21.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 245 N. What is the net torque acting on the ladder
A 32.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 21.00 m. Calculate the mechanical energy lost due to friction
Two submarines are underwater and approaching each other head-on. Sub A has a speed of 17 m/s and sub B has a speed of 8 m/s. What is the frequency of the sound detected by sub B
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