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A bicyclist rides 3.01 km due east, while the resistive force from the air has a magnitude of 7.71 N and points due west. The rider then turns around and rides 3.01 km due west, back to her starting point. The resistive force from the air on the return trip has a magnitude of 7.71 N and points due east. Find the work done by the resistive force during the round trip.
question1a bank robber travelling at 75 mihr in an escape car suddenly sees a barricade 150 meters ahead. the robber
A large closed bag of plastic contains 0.10 m3 of an unknown gas at an initial temperature of 10°C and at the same pressure as the surrounding atmosphere, 1.0 atm. How many moles of gas are in the bag
The steel I-beam in the drawing has a weight of 8.39 × 103 N, What is the tension in each cable attached to its ends
question 1. draw a picture of a moving source and the waves surrounding it according to what you observed in this
An excellent laboratory vacuum has a pressure of 5.00 multiply.gif 10-18 atm, ow many gas molecules are there per cubic centimeter in such a vacuum at 290 K
A Carnot engine operates between 230 °C and 120 °C, absorbing 6.30 multiplied by 104 J per cycle at the higher temperature. How much work per cycle is this engine capable of performing
An electron starts from rest 54.9cm from a fixed point charge with Q = -0.278uC. How fast will the electron be moving when it is very far away
A slab of a thermal insulator with a cross-sectional area of 110{\rm cm^2} is 2.90{\rm cm} thick. how much heat flows through the slab
A major-league catcher gloves a 92 {rm mi}/{rm h} pitch and brings it to rest in 0.15 {rm m}.If the force exerted by the catcher is 803 {rm N}, what is the mass of ball.
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 90.0 km/h, 5.0 min at 90.0 km/h, Determine the average speed for the trip
Two toy locomotives approach each other along the same line, and upon collision both stop dead still. What is the mass of the slower locomotive
A 9 m, 260-N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.5, and the ladder makes a 50° angle with the ground. How far up the ladder can an 800-N person climb before the ladd..
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