12,762 Answered Questions for the topic physics

Physics Science

07/18/24

Is our house and our cars really spinning like the earth is spinning?
Are the parked cars and houses actually moving and spinning?
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Physics

07/18/24

When light reflects on an object. Let’s say the object is red, does the object itself actually do anything? Like physically?

When light reflects on an object. Let’s say the object is red, does the object itself actually do anything? Like physically?
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Physics

07/09/24

Coulomb's Law Word Problem
Figure (a) shows charged particles 1 and 2 that are fixed in place on an x axis. Particle 1 has a charge with a magnitude of |q1| = 22e. Particle 3 of charge q3 = +22e is initially on the x axis... more
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Physics

07/04/24

Simple kinematics in 2D

An object is under a motion with velocity v as function of distance V=(x^2+10x+3). What will be the velocity as function of time for same object following the same motion??
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Physics

06/28/24

Transmission Line Current
If a 50 Ohm transmission line is driven by a 10 V peak-to-peak RF source over 1-10 MHz, what current flows when it is terminated in 40 Ohms?
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Physics

06/24/24

Imagine an object is thrown upward at 50m/s. At what time will it stop?
Imagine an object is thrown upward at 50m/s. How high will it go? Imagine an object is thrown upward at 50m/s. When will it return to zero height?
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Physics Science

06/21/24

Wait, so does an object itself actually physically do something when light is reflected or refracted on the item to show the item color? Like for instance a red ball?

Wait, so does the object itself actually physically do something when light is reflected or refracted on the item to show the item color? Like for instance a red ball? Is the object itself... more
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Physics

06/20/24

waves and sound
An audio speaker producing a steady sound at an outdoor concert is 40 ft away from you. If you move to a position where the speaker is 63 ft distant, by what factor will the amplitude of the sound... more
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Physics

06/16/24

Where do you place the pivot?
 You are given a 2 m plank with a uniform mass of 10 kg. On one end of the plank, a 25 kg mass is being placed, i.e. the center of the mass is assumed to be at the end of the plank. On the other... more
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Physics

06/16/24

calculate the torque

calculate the torque applied to a nut, if the operator uses a 30cm wrench and applies 50 N of force at an angle of 15 degrees from the axis formed by the wrench.
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Physics

06/16/24

Determine the velocity of the block after the collision.
A spring with a spring constant of 150N/m is compressed by a distance of 5 cm. A ball of mass 0.50 kg is placed at the end of the spring, and the spring is released and collides with the ball. The... more
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Physics

06/16/24

determine the velocity

one car with a mass of 1500kg is going north at a speed of 25m/s. The car collides with a second car with a mass of 2000kg going west. The cars collide and stick together and have a vector of... more
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Physics

06/10/24

An aluminum wing on a passenger jet is 32 m long when its temperature is 25°C. At what temperature would the wing be 9 cm (0.09 m) shorter?
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Physics

06/08/24

Determine the velocity at the bottom of the first hill and the velocity at the top of the second hill
A person is traveling in a rollercoaster. The car is lifted to a point 20 m above the ground beforethe cart is released. The car travels to the bottom of the first hill which is 10 m above... more
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Physics

06/08/24

Find the resultant force.
 Given the following F = 3 i – 7.5 j and a force vector B that has a magnitude of 8 N and makes anangle counterclockwise from the x axis at 23 degrees. Find the resultant force. And theacceleration... more
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Physics

06/08/24

What are the Newton’s Laws that are at work here and why?
An astronaut of mass 52 Kg, pushes against the space craft door and flies away with anacceleration of 1.3 m/s2. What was the force applied in the push? What are the Newton’s Lawsthat are at work... more
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Physics

06/08/24

If a mine pony had to perform a task where they had to lift a bucket of ore 20 m from the bottom of
If a mine pony had to perform a task where they had to lift abucket of ore 20 m from the bottom of the shaft to the top of the shaft, what would thereduction in force be if a ramp was used that is... more
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Physics

06/08/24

A car is abruptly stopped by hitting a crash reduction barrier. It was traveling at a speed of 30 m/s when it hit the barrier, and the time that it took to stop was 0.5 ms
A car is abruptly stopped by hitting a crash reduction barrier. It was traveling at a speed of 30m/s when it hit the barrier, and the time that it took to stop was 0.5 ms. What was the force onthe... more
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Physics

06/08/24

You are given a set of blocks. Block one is on the top of the table,

You are given a set of blocks. Block one is on the top of the table, it is connected to block twousing a string and a frictionless pully. Block two is hanging down along the side of the table.Block... more
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Physics

06/07/24

What is the refractive index of a solution that has a critical angle of 40.8° with respect to air? The refracting index of air is 1.00.
Options: A. 1.17  B. 1.25 C. 1.53 D. 1.65Please explain in detail the step-by-step process. Thank you.
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Physics

06/02/24

Conservation of Energy
In order for Jane to return to base camp, she needs to swing across a river of width D that is filled with alligators. She must swing into a wind exerting constant horizontal force F, on a vine... more
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Physics

05/29/24

Help to solve problems
A 134 N uniform beam with a length of 2.2 m is attached to a pivot at one end, a cable at the other, and another cable at a point a distance of one-fourth the length of the beam away from the point... more
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Physics

05/29/24

Need help solve to solve problem
Two blocks on two ramps are connected by a string passing over two massive, frictionless pulleys. The block on the left has a mass of 190 g and moves up a ramp that is inclined at an angle of 29∘... more
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Physics Science

05/28/24

Does a solid object itself actually “do anything” to reflect light?
So does the solid object itself - in this instance a ball do anything? Like does the ball itself absorb and reflect, or is that really the atoms and molecules that make up the solid. (for example:... more
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Physics

05/28/24

If the world is spinning and moving, why are we stationary and items on earth stationary? Do various forces cancel out?
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