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A pesky rabbit has been feeding on Mrs. Cromwell's prized flowers. In order to put an end to this she devised the simple trap below to catch the rabbit. The crate weighs 13lb and is supported by stick BC. Find the minimum diameter of stick BC if the normal stress in it is limited to 100 psi.
A transformer has the voltages 121 Vpri and 45 Vsec. What is the current flowing in the secondary
A ball with a mass of 0.65 kg is dropped on a table. The initial height of the ball is 0.85 meters. Calculate the change in the momentum of the ball during its collision with the table
the electric flux is 300Nm^2/C through two opposing faces of a 2cm x 2cm x 2cm box. How much charge is inside the box
The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out during the lens at an object located directly behind the van, the object appears to be0.240 m from the back of the van, and appears to be 0.3..
A hand-driven tire pump has a 2.00 cm diameter piston and a maximum stroke of 33.0 cm. What average force do you exert on the piston
Starting from the top left corner and moving clockwise the charges are -10 uC, -10 uC, 5 uC, and 5 uC. What is the electric force on the top left charge due to all the other charges
The magnetic field of a certain motor is produced by solenoids whose windings are connected in parallel with the armature across the same potential difference of 115V. The coils have a resistance of 60.0 ohms and the armature a resistance of 4.0 o..
a spaceship approaches an asteroid and sends out a radio signal with proper frequency 6.5 x 109 hz. the signal bounces
Calculate the velocity of the object for an elapsed time.
A 246 kg wooden raft floats on a lake. as a 85 kg man stands on the raft, it sinks 5.0 cm deeper into the water. When he steps off, the raft vibrates for a while.
a subway train starts from rest at a station and accelerates at a rate of for 14.0 . it runs at constant speed for 70.0
Two cartons sit next to, and touching, each other on a frictionless horizontal surface. Calculate the contact force between these cartons when a horizontal force of 5.2 N is applied to the light carton
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