12,726 Answered Questions for the topic physics

Physics

10/19/23

what is the power supplied by the force of friction?
a block of mass, m = 353g is dragged with a string across a rough horizontal table. The string tension is T= 3.27 N, and it pulls upward at an angle of 45º with the horizontal. At one particular... more
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Physics

10/19/23

Calculate the acceleration of the car in front of you when it brakes. Answer in units of m/s 2 .
You are driving at the speed of 33.6 m/s (75.1771 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes and begins to slow down with the largest deceleration... more
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Physics

10/19/23

What is the acceleration of the block down the incline if the angle of the incline is 26 ◦ ? Answer in units of m/
What is the acceleration of the block down the incline if the angle of the incline is 26 ◦ ? Answer in units of m/
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Physics

10/19/23

If the mass of the earth 5.98 × 1024 kg, what is the magnitude of the earth’s acceleration toward the apple? Answer in units of m/s 2 .
When you drop a 0.39 kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s 2 toward the earth’s surface. According to Newton’s third law, the apple must exert an equal but opposite... more
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Physics

10/19/23

What is the direction of the net external force on the apple (measured from the downward vertical, so that the angle to the right of downward is positive)?Answer in units of ◦
What is the direction of the net external force on the apple (measured from the downward vertical, so that the angle to the right of downward is positive)?Answer in units of ◦.
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Physics

10/19/23

If an object is not accelerating, how many forces act on it?
1. 1 2. 3 3. Unable to determine 4. 0 5. 2
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Physics

10/19/23

You place a box weighing 375.6 N on an inclined plane that makes a 40◦ angle with the horizontal. Compute the component of the gravitational force acting down the inclined plane. Answer in units of N.
You place a box weighing 375.6 N on an inclined plane that makes a 40◦ angle with the horizontal. Compute the component of the gravitational force acting down the inclined plane. Answer in units of N. more
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Physics

10/19/23

You place a box weighing 375.6 N on an inclined plane that makes a 40◦ angle with the horizontal. Compute the component of the gravitational force acting down the inclined plane. Answer in units of N.
You place a box weighing 375.6 N on an inclined plane that makes a 40◦ angle with the horizontal. Compute the component of the gravitational force acting down the inclined plane. Answer in units of N. more
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Physics

10/18/23

Write an expression for the magnitude of the force, F, exerted on the firefighter by the pole.

A firefighter, whose mass (including clothing and equipment) is m = 85 kg, hears the alarm and slides down the pole with a constant downward acceleration of magnitude a = 3.23 m/s^2.Answer in terms... more
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Physics

10/18/23

What is the total horizontal distance in meters traveled by the ball?
A football is punted from the ground at an angle of 54 degrees with respect to the horizontal. The ball is in the air for a time of 1.1 seconds before it lands back on the ground.
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Physics Math Science

10/18/23

Vector Problems - Projectile Motion (finding vertical velocity)
A soccer ball leaves the ground at an angle of 12.5° with an initial horizontal velocity of 38.17m/s. What is the initial vertical velocity?
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Physics

10/18/23

magnitude of static friction force on brick-need help!
A 1.90 kg brick is placed on a ramp with a 32.0' slope. The coefficient of static friction is 0.72. What is the magnitude of the static friction force acting on the brick?
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Physics

10/18/23

Skydiver-Speed problem
A skydiver with a mass of 47 kg has a parachute with an area of A=44 m^2. After opening the parachute and reaching the terminal speed with the parachute, how fast does she descend through the air?
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Physics

10/18/23

Baseball friction and distance problem-need help for future exam
A 82 kg baseball player, running at 3.5 m/s, slides into first base. If the coefficient of kinetic friction is 0.40, how far does the player slide?
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Physics

10/18/23

AIRCRAFT-Force and Speed question (need help for exam Friday)
A certain aircraft has a mass of 301,000 kg. At a certain speed is 27.0 m/s. If the braking force is a constant 445,000 N, what is the speed of the airplane 10.0s later?
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Physics

10/17/23

Answer this Physics Question:

If I were to imagine making an entire experiment about Newton's three laws that was performed on a train traveling at a constant speed, would my recorded data change and why or why not?
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Physics

10/17/23

Answer this Question on Newton's Laws
Why it is relatively easy to walk down the aisle on an airplane in flight, but would be difficult to do during takeoff or landing when using Newton's laws?
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Physics

10/17/23

Question about Newton's Laws Experiment
If I make an entire experiment about Newton's first laws that was performed on a train traveling at a constant speed, would my recorded data change and why or why not?
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Physics

10/17/23

Newton's 1st Law Question
So for this one, I place a ball on a flat surface (such as a book). What happens when: I suddenly move the book forward? I suddenly move the book backward? I slowly move the book forward with a... more
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Physics

10/17/23

PHYSICS BLOCK, FRICTION, NET FORCE
Three blocks are lined up next to each other on a level frictionless table. From left to right, call them blocks A, B, and C. The blocks have masses, from left to right, of 2.0 kg, 4.0 kg, and... more
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Physics

10/17/23

Horizontal Circle
A 2.7×10^3 kg satellite orbits the Earth at a distance of 1.8x10^7 m from the Earths center. The satellite experiences a force of 3500 N from the Earth. What is the period of the satellite?
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Physics

10/17/23

Physics Friction problem-Need help for future exam
A 310 N sled of slides down a frictionless hillside that rises at 27' above the horizontal. What is the magnitude of the force that the surface of the hill exerts on the sled?
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Physics

10/16/23

PHYSICS REVIEW QUESTION- I just need help walking through it
A baseball pitcher throws a baseball at 40.3 m/s. To throw the ball, the pitcher exerts a constant force resulting in an acceleration in the horizontal direction over a distance of 1.85m. The... more
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Physics

10/16/23

PHYSICS REVIEW PROBLEM-Confused please help!
A 18kg sign is held up by the two ropes that pull on each side of the sign at 58' from the vertical direction. What is the tension on each rope?
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Physics

10/16/23

PHYSICS EXAM REVIEW PROBLEM-Exam Friday, please help!
You are driving home with a 5.5 kg birthday cake sitting on your front seat, which is level. The coefficient of static friction between the cake and the seat is 0.40 and the coefficient of kinetic... more
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