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A rabbit runs in a straight line by a velocity of +1.7 m/s for a period of time, rests for 9 s, and then runs again along the same line at+0.59 m/s for an unknown amount of time. The rabbit travels a total distance of 1296 m, and its average speed is 0.84 m/s.
a) How long does it spend running at 0.59m/s?
b) What is the total time the rabbit spends running at1.7 m/s?
A runner sprints around a circular track with circumference 400m. If he completes one lap in 45s, what is his average angular velocity
What speed limit should be posted for the curve. How long (in {rm ns}) does it take light incident vertical to the glass to pass through this 9.0 {rm cm}-thick sandwich.
In a certain RLC circuit, the RMS current is 6.42 A, the RMS voltage is 235 V, and the current leads the voltage by 55.6°. Calculate the average power dissipated in the circuit
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A sodium atom (Z = 11) contains 11 protons in its nucleus. Strictly speaking, the Bohr model does not apply, determine the corresponding radius r of the outermost Bohr orbit
Ray decides to paint the outside of his uncle's house. He uses a 4.0-m-long board supported by cables at each end to paint the second floor. find the force that the right cable exerts on the board
A steel wire is strung between two supports attached to aceiling. Initially, there is no tension in the wirewhen it ishorizontal. What is the radius of the wire
A student shoots spitball at the wall from a height of 1.50 meters. The spitball has an initial horizontal velocity of Vxo, other than has no vertical velocity component. The spitball lands on the ground 8 meters from where it was shot. What is the V..
A person drives a car around a circular cloverleaf with a radius of 64 m at a uniform speed of 10 m/s. What is the acceleration of the car
A 25.0kg child plays on a swing having support ropes that are 1.80m long. How fast will she be moving at the bottom of the swing
A 15.0-kg block of ice at 0 °C melts to liquid water at 0 °C inside a large room that has a temperature of 20.0°C. Calculate the net entropy change of the system
A bungee cord is stretched between two poles with a force of 443 N. What is the velocity of a wave on this bungee cord
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