Get college assignment help at uniessay writers Tarzan (m = 85.0 kg) tries to cross a river by swinging from a vine. The vine is 10.0 m long, and his speed at the bottom of the swing (as he just clears the water) is 8.00 m/s. Tarzan doesn’t know that the vine has a breaking strength of 1000 N. Does he make it safely across the river? Yes No
how much work is done by a 30 gram bullet traveling at 200 m/s
complete the table below for a 0.200-kg pendulum bob (“weight”) trajectory: height (m) Speed (m/s) Potential Energy (Joules) Kinetic Energy (Joules) Total Mechanical Energy (Joules) 2.000 0.000 1.490 3.920 1.128 0.897 0.357 1. At what height will the kinetic energy be at a maximum? 2. What is the relationship between Total Mechanical Energy, Potential Energy, and Kinetic Energy? 3. Does the Total Mechanical Energy change during the pendulum swing? Please tell why or why not. 4. If the pendulum bob had a mass of 1 kg rather than 0.200 kg, what would the potential energy be at the 2.000 m height? 5. If the experiment was done under water, how would that change the kinetic energy of the pendulum?
A small block of mass 36 g is released from rest at the top of a curved frictionless wedge of mass 388 g which sits on a frictionless horizontal surface as shown. The acceleration due to gravity is 9.81 m/s2. Right is the positive direction. When the block leaves the wedge, its veloc- ity is 3.91 m/s to the right. What is the height h of the wedge? Answer in units of m.
What is the weight of a 225 kg space probe on the moon? The acceleration of gravity on the moon is 1.62 m/s
A car is traveling 23 m/s when the driver sees a child standing in the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.0 m/s2. How far does the car go before it stops?
If the electric field has a magnitude of 450 and the magnetic field has a magnitude of 0.19 , what speed must the particles have to pass through the selector undeflected?
A car is parked on a cliff overlooking the ocen on an incline that makes an angle of 12 degrees below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a constant acceleration of 3.00 m/s square for a distance os 35.0 m to the edge of the cliff. The cliff is 25.0 m above the ocean. Find the car’s position horizontal relative to the cliff when the car lands in the ocean, and the length of time the car is in the air.
Solar energy is incident on the pond at an average rate of 400 . If the water absorbs all the solar energy and does not exchange energy with its surroundings, how many hours will it take to warm from 15 to 25 ?
An emf source with a magnitude of 120 V, a resistor with a resistance of 94.0 Omega, and a capacitor with a capacitance of 5.00 uF are connected in series. As the capacitor charges, when the current in the resistor is 0.900 A, what is the magnitude of the charge on each plate of the capacitor? I tried to do C=QV..but not sure if its right…any help with this?
Get college assignment help at uniessay writers A capacitor with a capacitance of 460 pF is charged with charge of magnitude 65.9 nC on each plate. The capacitor is then connected to a voltmeter that has an internal resistance of 1.28 Omega. I did V= q/C, and then did V/R= I, but my answer of 111A was wrong….. not sure how else to go abt doing this.. thanks in advance for helping..
A small motor runs a lift that raises a load of bricks weighing 670 N to a height of 14 m in 25 s. Assuming that the bricks are lifted with constant speed, what is the minimum power the motor must produce?
A projectile is launched from a cannon at ground level at an angle of 62.0 degrees elevation and has a muzzle velocity of 481 m/s. How many seconds after it is fired does it reach max height?
2.70 kg block is in equilibrium on an incline of 33.7◦. The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline on the block? Answer in units of N
A long wire lying along the x-axis carries a current of 1.20 A in the x direction. There is a uniform magnetic field present, given by B=0.003i 0.004j 0.002k, where i, j, k are the unit vectors along the cartesian coordinate axes’) in units of Tesla. Calculate the y-component of the magnetic force acting on a segment of wire of length L = 13.0 cm
A potter’s wheel having a radius 0.50 m and a moment of inertia 11.7 kg·m2 is rotating freely at 53 rev/min. The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radially inward force of 68 N. Find the effective coefficient of kinetic friction between the wheel and the wet rag.
If the backpack begins to slide when the spring ( = 140 ) stretches by 2.40 , what is the coefficient of static friction between the backpack and the table? A backpack full of books weighing 55.0 rests on a table in a physics laboratory classroom. A spring with a force constant of 140 is attached to the backpack and pulled horizontally, as indicated in the figure .
An athlete at the gym holds a 2.6 kg steel ball in his hand. His arm is 78 cm long and has a mass of 4.0 kg. What is the magnitude of the torque about his shoulder if he holds his arm in each of the following ways? a)straight out, parallel to the floor? b)arm 35 degrees below horizontal
The two blocks are connected by a massless rope that passes over a pulley. The pulley is 17 cmin diameter and has a mass of 2.0 kg. As the pulley turns, friction at the axle exerts a torque of magnitude 0.60 N .
A solid sphere (I = 0.4MR2) of radius 0.06 m and mass 0.50 kg rolls without slipping 14m down a 30º inclined plane. At the bottom of the plane, the linear velocity of the center of mass of the sphere is approximately
A 0.15kg baseball is thrown upward with an initial speed of 20.0 m/s. What os thhe force on the ball when it reaches half of its maximum height?
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