12,727 Answered Questions for the topic physics

Physics

07/10/23

finding a spring constant and kinetic energy involving a spring
A 1200 kg safe is 2.4 m above a heavy-duty spring when the rope holding the safe breaks. The safe hits the spring and compresses it 56 cm .
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Physics

07/08/23

Find the force the left support beam applies to the balance beam. Find the force the right support beam applies to the balance beam.

The balance beam's own weight is negligible. Consider that the support force acts at a distance d = 1.625 m from the center of the beam. Take g = 9.8 m/s2.There is 20kg at a distance of 1 m from... more
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Physics

07/07/23

An alpha particle (4He) undergoes an elastic collision with a stationary uranium nucleus (235U). What % of the kinetic E of the alpha particle is transferred to the uranium nucleus? collision is 1D
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Physics

07/06/23

uniform motion graph
A squirrel has just grabbed a peanut from an unsuspecting park visitor. In his panicked attempt to get safely back to his tree, he runs back and forth a few times to elude any would be pursuers. A... more
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Physics

07/06/23

Pendulum question in physics 11 2D forces
A student swings on a long rope of length L=5m. The student starts by pulling back at an angle of 𝜃𝜃 = 30º as shown below.a. Determine the initial height of the student by solving the highlighted... more
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Physics

07/06/23

Calculate the force and coefficient of static friction
A 90 kg Elton John is trying to keep a 310 kg piano from accelerating down a ramp inclined at 35°. The kinetic co-efficient of friction between the piano and the ramp is 0.25. a) Calculate the... more
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Physics

07/06/23

A 9.6 kg box slides down a ramp inclined at 32° to the horizontal. If it accelerates at a rate of 2.9m/s2 , what is the coefficient of kinetic friction, μk? Lay out your work as shown in the lessons.

A 9.6 kg box slides down a ramp inclined at 32° to the horizontal. If it accelerates at a rate of 2.9m/s2 , what is the coefficient of kinetic friction, μk? Lay out your work as shown in the lessons. more
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Physics

07/06/23

Pendulums in Physics 11
A student swings on a long rope of length L=5m. The student starts by pulling back at an angle of 𝜃𝜃 = 30º as shown below. a. Determine the initial height of the student by solving the highlighted... more
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Physics

07/06/23

What is the precessional angular speed 𝜔p of the top?
A top composed of a thin uniform cylinder and a broad uniform disk. The 13.3 g cylinder has a total length of 5.70 cm. The 42.0 g disk has a radius of 1.95 cm, and its CM is located a distance... more
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Physics

07/04/23

Physics capacitor question
Two capacitors give an equivalent capacitance of 9.20 pF when connected in parallel and an equivalent capacitance of 1.73 pF when connected in series. What is the capacitance of each... more
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Physics

07/04/23

HELP WITH PHYSICS!
To work this problem, use the fact that the image formed by the first surface becomes the object for the second surface. The figure below shows a piece of glass with index of refraction n =... more
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Physics

06/29/23

voltage scale s
Large voltages can be measured with a voltage balance. The electrical attraction that two charged capacitor plates exert on each other is compensated by a weight. The capacitor of the voltage scale... more
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Physics

06/26/23

Find the speed and direction of the balls after collision.
A 1.5 kg ball moving at 2 m/s to the right collides head on with a 1kg ball moving at 3 m/s to the left. The coefficient of restitution is 0.7. Find the speed and direction of the balls after... more
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Physics

06/26/23

Find the speed and direction of the balls after collision.
A 1.5 kg ball moving at 2 m/s to the right collides head on with a 1kg ball moving at 3 m/s to the left. The coefficient of restitution is 0.7. Find the speed and direction of the balls after... more
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Physics

06/26/23

Find the maximum height through which it rises?
A bullet with a mass of 0.02 lbs is fired with a nozzle velocity of V1 = 2700 ft/sec into a ballistic pendulum with a mass of 20 lbs. Find the maximum height through which it rises?
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Physics

06/26/23

Find U1 and U2, What kind of collision occurred?
A body of mass 100g with a velocity of 10 cm/ sec hits another identical body at rest. and the two bodies recoiled as the second body moved 30* above the horizontal and the first body moved 30*... more
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Physics

06/26/23

Find the final velocity of each block if the collision is elastic?
A 200g block moves to the right at a speed of 100 cm/sec and meets a 400g block moving to the left with a speed of 80 cm/sec. Find the final velocity of each block if the collision is elastic?
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Physics Geology

06/26/23

Does our concept of hydraulic head exist outside of ideal water conditions?
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Physics

06/26/23

Draw a free-body diagram and write Newton’s second law of motion for the forces...
Draw a free-body diagram and write Newton’s second law of motion for the forces and accelerations experienced by a pendulum bob of mass m swinging under the influence of gravity, g, when it is at... more
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Physics

06/25/23

Please help ASAP
Charge q1 = 5.01·10–8 C is placed at the origin. Charges q2 = -1.95·10–8 C and q3 = 2.03·10–8 C are placed at points (0.151 m,0 m) and (0 m,0.323 m), respectively, as shown in the figure. Determine... more
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Physics

06/25/23

A car traveling at 40 km h-1 speed upto 50 km h-1 in 4 seconds. Calculate the acceleration of the car
Solve this numerical
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Physics

06/25/23

A car traveling at 40 km h-1 speed upto 50 km h-1 in 4 seconds. Calculate the acceleration of the car
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Physics

06/23/23

physics question

A 75-g bullet is fired from a rifle having a barrel 0.620 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas... more
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Physics

06/23/23

Adiabatic changes of state. Final T
In diesel engines, the ignition temperature is reached by compressing the diesel/air mixture in the piston (self-ignition). The mixture, whose pressure initially corresponds to the normal pressure... more
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Physics

06/23/23

What is the dependence of the period of a pendulum’s oscillation...
What is the dependence of the period of a pendulum’s oscillation on the mass, m, of the pendulum. Why?
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