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A cyclist is moving down a steep hill that has a grade of 20%. The rider is traveling at 3.5 m/s. The combined weight of the rider and cycle is 800N and the dynamic coefficient of friction between the tires and the road is 0.7. If the rider suddenly applies the brakes and the wheels stop rotating and begin sliding relative to the road, then how far does the cycle travel until it stops?
A jet plane is flying with a constant speed along a straight line, at an angle of 35.0 ° above the horizontal. What is the magnitude of the thrust force
A 10m^3 tank of compressed natural gas has an absolute pressure of 400 kPa at a temperature of 27 C. What is the mass of the gas in the tank
A man traveling on a bicycle at 10 m/s along a straight road that runs parallel to some railroad tracks. What frequency is heard by a stationary observer located between the train and the bicycle
On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, leaving a dent 22 deep in the trunk. what was the magnitude of its deceleration
A kicker punts a football from the very center of the field to the sideline 37 yards downfield. ( a football field is 57 yards wide) What is the direction of the net displacement of the ball
You are pushing a 142 kg wooden crate in a straight line a distance of 5.1 m across a wooden floor. The crate is speeding up at 0.30 m/s^2. What is the work done by friction on the crate
A dockworker applies a constant horizontal force of 89.0N to a block of ice on a smooth horizontal floor
Object A, which has been charged to + 16nC , is at the origin. Object B, which has been charged to ? 20nC , is at (x,y)=(0.0cm,2.0cm). What is the magnitude of the electric force on object A
questiona 67.0 kg person holds out his arms so that his hands are 1.70 m apart. normally a persons hand makes up about
A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s
A 2.55-cm-diameter parallel-plate capacitor with a spacing of 0.38 mm is charged to 300 V. What is the total energy stored in the electric field
If I eat 500g of something which is 700Bq/kg, with a half life (biological and physical) of 55 days, what is the dose and effective dose on someone who is 70kg.
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