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A certain spring has a spring constant k of 2.5 k N/m and is compressed by 50 cm. The spring is used in a gun to propel a 40 g bullet. What is the muzzle velocity as the bullet leaves the barrel?
question1a spark plug in a car has electrodes unconnected by a gap of 0.023 in. to make a spark and ignite the air-fuel
A bottle containing 3.4 kg (mass) of water at a temperature of 23.4 oC is placed in a refrigerator where the temperature is kept at 3.2 oC
A sailor drops a wrench from the top of a sailboat's vertical mast while the boat is moving rapidly and steadily straight forward. Where will the wrench hit the deck
A cylindrical buoy of diameter 35 cm floats upright in the water and is submerged to a depth of 1.85 m. What volume of water does the buoy displace
A 1400 kg car carrying four 92 kg people travels over a "washboard" dirt road with corrugations 4.5 m apart. by how much does the car body rise on its suspension
Air traffic controllers use radar to keep track of the location of aircraft.
A cold room has walls constructed of 0.24 m brick on the outside, 0.15 m foam insulation in the middle and 1.6 cm of wood on the inside. Calculate the outside and inside surface temperature of the composite wall
q1. laser light at 635nm falls on a double-slit apparatus with slit separation 6.910-6m. find out the separation
You are driving north on 107th Avenue at a speed of 32.3 mph. A police car whose siren produces a sound at a frequency of 513 Hz is approaching from the opposite direction at a speed of 61 mph, At what frequency do you year the siren
A certain lightbulb is rated at 60.0 W when operating at an rms voltage of 120 V. What is the peak voltage applied across the bulb
Find the weight of the hanging mass when the spring, with spring constant 15.5 kN/m , has been stretched 15.1cm
A pencil (mass 5.8g and length 8.3cm) is at first balanced so that it is sitting vertically on a flat table. If the pencil then falls, find its angular velocity just before it strikes the tabletop. Assume that the mass of the pencil is distributed un..
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