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Question: You kick a block of mass 3.7 kg so that it slides to the right across the floor. A friction force of magnitude 11 N points towards the left, (You don't have to understand anything about friction here - just the magnitude and direction of the force!)
Part A: What is the value of the normal force exerted on the block by the floor? (Make sure that you draw a FBD and apply Newton's 2nd law to solve this problem!)
Part B: What is the acceleration of the block?
I need help to find the value of the normal force exerted on the block by the floor.
Does the length of the Guy West Bridge ever change? Estimate the difference in the length of the footbridge between the hottest and coldest day of the year. estimate the length of the bridge
A train increases its speed from 45 to 90 km/h. Find the speed (i) at half time, (ii) at half way, assuming the acceleration to be constant. Give answers in km/h.
When the tension in a cord is 77.4 N, the wave speed is 132 m/s. What is the linear mass density of the cord
A parachute dropped from a 30-m high cliff falls with a fix velocity of 1.5 m/s. Twenty two seconds later a stone is dropped from the cliff. Find how long does it take the stone to hit the ground
What power is supplied to the starter motor of a large truck that draws 260 A of current from a 22.5 V battery hookup
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer, What is the mass of the unknown element
As measured in Earth's rest frame, a spaceship traveling at 0.964 c takes 12.1 y to travel between planets. How long does the trip appear to take for someone on the spaceship
A typical nuclear reactor generates 1000 MW(1000MJ/s) ofelectrical energy. In doing so, it produces 2000 MW of"waste heat" that must be removed from the reactor to keep it frommelting down. Many reactors are sited next to large bodies of waterso t..
consider two spheres with two masses and two charges. at a distance of 119.0 m the ratio of the electric force to the
A weightlifter "snatches" a 1200 N weight by exerting a 1400 N average force for the first meter off the ground, then relaxing his grip and "getting under" the bar to catch it and give it a final upward push. What velocity will the weight attain af..
A 30 ohm resistor has a voltage difference of 3 volts across its leads. What is the power being dissapated in the resistor
If the ladder is just on the verge of slipping when the firefighter is 8.44 m up from the bot- tom, what is the coefficient of static friction between ladder and ground
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