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NEWTON'S LAWS
1. How much net force is needed to accelerate a 15kg mass at 2.8 m/s2?
2. Delon's car is dead. He is pushing it to the east out of the parking lot with a force of 250N. carter, being a good friend, comes to help and also pushes east with a force of 75N. If Delon's car has a mass of 750kg, what is the car's acceleration?
3. Hunter is pulling on his little red wagon to the west with a force of 125N. Luke doesn't want him to take the wagon so he is pulling in the opposite direction with a force of 75N. If the wagon has a mass of 15kg, what is the wagon's acceleration?
4. A plane's engine is pushing it north with a force of 1250N (weak engine). The wind is blowing to the east with a force of 125N. If the plane is a 775kg mass, what is the magnitude of its acceleration?
5. A 50.0kg box is being pulled by two teams of people. Team Sicily is pulling on the box with a force of 324N @ 40.0° N of E. Team Jamaica is pulling on the box with a force of 856N @ 20.0° W of N. What is the resultant acceleration of the box? (There are NINE calculations needed to get to the proper answer!)
What is the potential difference across the plates of the 6.0 uF capacitor? What is the charge on the 3.0 uF capacitor? What is the charge on 4.0 uF capacitor?
Estimate the average force that a baseball pitcher's hand exerts on a 0.145-kg baseball as he throws a 36-m/s pitch
Two spheres are launched horizontally from a 1.2 -high table. Sphere is launched with an initial speed of 4.5. What is the time for the sphere to hit the floor
Water is flowing through a pipe with a constriction. The area of the narrow section is one-half the area of the wide section. what is the velocity of the fluid in the narrow section
A series ac circuit contains a 250-ohm resistor, a 15-mH inductor, a 3.5uF capacitor, and an ac power source of voltage amplitude 45 v operating at an angular frequency of 360 rad/s, (a) what is the power factor of this circuit? (b) Discover the aver..
A football is kicked at ground level with a speed of 40 m/s at an angle of 32.0 degrees to the horizontal. How much later does it hit the ground
Calculate the expectation values , , and for the ground state, | 0 >, and the first excited state, | 1 >, of the harmonic oscillator.
According to the shop manual, when drilling a 12.1-mm-diameter hole in wood, plastic, or aluminum, a drill should have a speed of 1400 rev/min. find the maximum linear speed of any part of the bit
An airplane propeller is 2.58 meter in length (from tip to tip) and has a mass of 122 kilogram. Compute the angular acceleration of the propeller
A copper (Young's mudulus 1.1 x 10^11 N/m2) cylinder and a brass (Young's mudulus 9.0 x 10^10 N/m2) cylinder are stacked end to end, Find the amount by which the length of the stack decreases
An intern pushes a 72 kg patient on a 15 kg gurney, producing an acceleration of 0.60 m/s2. How much work does the intern do by pushing the patient and gurney through a distance of 2.5 m
A neutral pie-meson is particle that can be created by accelerator beams. If one such particle lives 1.40 x 10^16 s as measured in the laboratory, what is its velocity relative to the laboratory
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