8,531 Answered Questions for the topic physics

2h

Read the Question Below Please :)

A smooth circular hoop with a radius of 0.700 m is placed flat on the floor. A 0.375-kg particle slides around the inside edge of the hoop. The particle is given an initial speed of 10.00 m/s.... more

2h

Please Read Question Below :)

A girl on a bike is moving at a speed of 1.40 m/s at the start of a 2.30 m high and 12.4 m long incline. The total mass is 50.0 kg, air resistance and rolling resistance can be modeled as a... more
Physics

4h

ENERGY QUESTION 2

A ship of mass 125 MT accelerates at 220 m/s^2 from an initial speed of 10 knots. a) How fast will the ship be travelling after 45 min. b) How much kinetic Energy has the ship gained?
Physics

19h

Solve for magnitude and direction of ball's change in momentum and the average force that the floor exerts on the ball

A basketball player drops a 0.5 kg basketball vertically so that it is traveling at 5.0 m/s when it reaches the floor. The ball rebounds upward at a speed of 3.2 m/s. The ball is in contact with... more
Physics

1d

Linear Expansion

The titanium shell of an SR-71 airplane would expand when flying at a speed exceeding 3 times the speed of sound. If the skin of the plane is 400 degrees C and the linear coefficient of expansion... more
Physics Modern Physics

1d

will green light generate power?

The amusement park is trying to incorporate more eco-friendly practices. As a result, they are installing solar panels to help power the park. If the panel is made of silicon metal with a work... more
Physics Forces

1d

static forces problem

Perry (5.20 kg) slides down a ramp (26° relative to horizontal).Starting from rest, the platypus slides a diagonal distance of 2.1 m in 4.8 s.What is the coefficient of kinetic friction between the... more
Physics

2d

An object is thrown at an angle of 30 degrees above the horizontal, with a speed of 88.2 m/s.

How long does it take the ball to reach the maximum height?What is the maximum height reached by the ball?What is the magnitude or the object's velocity 2 seconds after launch?What is the... more
Physics

2d

Pysics about current in circuit

Two circuits have the same resistance. The potential in Circuit A is 3 times of that in Circuit B, but its current is only 0.6A greater than Circuit B. What is the current in Circuit B?
Physics

3d

lily leans a ramp against a wall

lily leans a ramp against a wall so that an angle of 35’ exists at the top. She places a 5.5 kg text at the top of the ramp.What is the normal force on the text?What is the gravity force, downward... more
Physics

3d

The velocity-time graph

The velocity-time graph of part of a cyclist's trip consists of a straight line between v = 23.0 m/s at t = 14.0 s and v = 0 at t = 24.0 s. What distance was covered during this portion of the trip?
Physics

3d

Q2: Laura leans a ramp against a wall so that an angle of 35’ exists at the top. She places a 5.5 kg text at the top of the ramp.

Q2: Laura leans a ramp against a wall so that an angle of 35’ exists at the top. She places a 5.5 kg text at the top of the ramp.What is the normal force on the text? What is the gravity force,... more
Physics

3d

Q1: Ella has a mass of 84.0 kg. If she should be lucky enough to travel in space in her lifetime she would...

Q1: Ella has a mass of 84.0 kg. If she should be lucky enough to travel in space in her lifetime she would... i) go to the moon, where gravity is a mere 1.6 m/s^2, and set up a basketball game... more
Physics

4d

What is the volume of a piece of diamond (𝜌 = 3.5 g/cm3) that has a mass of 0.70 kg?

What is the volume of a piece of diamond (𝜌 = 3.5 g/cm3) that has a mass of 0.70 kg?
Physics

5d

Projectile Motion

Maria throws a ball straight up with an initial velocity of 10 m/s. What is its velocity at the highest point? What is its acceleration at the highest point? Please explain your answer.
Physics

5d

Projectile Motion

Maria throws a ball straight up with an initial velocity of 10 m/s. What is its velocity when it returned to the elevation from where it was thrown? Please explain your answer.
Physics

5d

What minimum force would you need to apply to do work against gravity without accelerating an object?

The way this question was worded is strange. The object is placed at a height of 5m on a frictionless surface and it is let go. It travels the U-shaped track back and forth. How can there be no... more

6d

Please, Read the Question Below :)

A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 594 N. As the elevator later stops, the scale reading is 386 N. Assume the magnitude of the... more

6d

Please, Read the Question Below :)

You can feel a force of air drag on your hand if you stretch your arm out of the open window of a speeding car. [Note: Do not endanger yourself by performing this experiment.] Calculate this force,... more

6d

Please, Read the Question Below :)

The mass of a sports car is 1400 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.250 and the frontal area is 2.30 m2. Neglecting all other sources of friction, calculate... more

6d

(a) A sphere made of plastic has a density of 1.08 g/cm^3 and a radius of 7.50 cm. It falls through air of density 1.20 kg/m^3 and has a drag coefficient of 0.500. What is its terminal speed (in m/s)?

(b) From what height (in m) would the sphere have to be dropped to reach this speed if it fell without air resistance?
Physics

6d

Physics Question

I need help solving this physics problem. A 30 kg ice skater goes around a circle of radius 5 m at a constant speed of 5 m/s on a level ice rink.1) Draw a sketch of the situation2) what are the... more
Physics

7d

Physics (energy)

Name one benefit and one drawback to the environment to using an electricity gathering bike desk.
Physics

7d

Kinematics Physics

A man stands on the edge of a 30m high cliff. He throws a ball upwards at 20 m/s.If the ball falls all the way to the bottom of the cliff1.)Find the velocity when it hits the ground.2.)Find the... more

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