Q: A 75.0 Kg person stands on a scale that reads 500. Newtons. The person is pulling on a rope that is…

A: The tension in the rope T=mg-N  =75.0 kg×9.81 ms2-500 N  =236 N

Q: Why do you need to brace yourself before pushing on something heavy or throwing something?

A: Bracing: Bracing is defined by a type of voluntary core activation that enabling tighten up on…

Q: A hockey puck having a mass of 0.30 kg slides on the frictionless, horizontal surface of an ice…

A:

Q: A clothesline always sags a little, even if nothing hangs from it.Explain.

A: A clothline sags

Q: How can it be so hard to drag rubber across smooth glass if friction is caused by surface roughness?

A: Friction is the force of opposition for any sliding or dragging action of an object over a surface.

Q: A 6-meter-long beam which has a mass of 40kg, is held up by two ropes. An 80kg mass is placed 1…

A:

Q: You are pulling a child in a wagon. The rope handle is inclined upward at a 60° angle. The tension…

A:

Q: Which has a higher friction: rubber on ice? or Aluminum on steel? Why?

A: Kinetic and Static coefficient of friction of rubber on ice: kinetic = 0.15  Static = 0.15

Q: A 75-kg petty thief wants to escape from a third-story jail window, Unfortunately, a makeshift rope…

A:

Q: A 40 kg horizontal bar is rested on the ledge and supported by a cable. A 70 kg block is hanging…

A:

Q: A picture with a mass of 0.30kg is hung from a wall. The single wire that the picture is suspended…

A:

Q: From rest a balloon begins to rise. the Balloon experiences a lift due to a buoyant force of 8000 N.…

A: 7. Given that- Distance(×)=3 m Falling distance=10m To determined that- Find the horizontal velocity…

Q: Physics For an elevator model: Coefficient of friction for lubricating oil = 0.1 (Nms) Mass of…

A: The counterweight of the elevator is given by the formula Elevator Counterweight = Elevator maximum…

Q: A parachute descends slowly. Why?

A: When any object falls from a height, gravity acts on it, which pulled it downwards, but the air…

Q: A 1.6 kg book is pressed against a wall with a perpendicular force. The coefficient of friction is…

A: Draw the free-body diagram of the book as illustrated below:

Q: The reason you are able to push a heavy sofa across a floor is that _____________.

A: When we push a sofa, the force that opposes its impeding motion is static friction.  Maximum value…

Q: What is true about the constant G? (3.5)(a) It is a very small quantity.(b) It is a force.(c) It is…

A: The constant G is known as the Newton's law of  Gravitational constant. It plays a vital role in all…

Q: It is easier to pull than to push a lawn roller, why?

A:

Q: A sphere kept on a rough inclined plane in a equilibrium by a string Wrapped over it. If the angle…

A: To determine Tension in the string for the given data.

Q: A 55.0-kg person jumps from rest off a 4.60-m-high tower straight down into the water. Neglect air…

A: Given, Mass of the person, m = 55.0 kgheight of the tower, h = 4.60 mhe comes to rest 1.40 m under…

Q: THE 500LB BOX IS RAISED USING ROPES AB AND AC. EACH ROPE CAN WITHSTAND A MAXIMUM TENSION OF 2500LB…

A:

Q: A teacher connects a bowling ball to a rope that hangs from the ceiling. The teacher is about to…

A: When ball is placed at horizontal it will have zero speed but it have potential energy. So, when…

Q: From rest a balloon begins to rise. the Balloon experiences a lift due to a buoyant force of 8000 N.…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: A 150-kg crate is on a table. A little amount of push from the top was applied to it. Which of the…

A: Weight is defined as product of mass and acceleration due to gravity and both mass and acceleration…

Q: •A person holds a bucket of water at rest with a rope. After getting tired the person then ties the…

A: Ehen he tied the rope with the bucket than tension is equal to the weight of the bucket full of…

Q: An inextensible cable of negligible mass is used to drag a log on a rough horizontal surface. The…

A: As per the question, we can formulate an FBD to solve it easily:

Q: how do I calculate for getting the maximum decceleration of a bicycle before tipping off?

A: Deceleration means slowing down. This happens when the direction of acceleration is opposite to…

Q: A horizontal force of 12 N pushes a 0.50-kg book against a vertical wall. The book is initially at…

A:

Q: It is more difficult to walk on ice than on a concrete road because  A) there is very little…

A: Introduction: The friction always acts opposite to the direction of the relative motion of two…

Q: As a ladder leans against a wall it exerts a force on both the wall and ground. What are the two…

A: The forces acting on the ladder are  1. The gravity that acts downward.  2. The wall exerts a…

Q: The uniform diving board has a mass of 26 kg. Find the force on the support A when a 69 kg diver…

A:

Q: A ski that is placed on snow will stick to the snow. However, when the ski is moved along the snow,…

A: Given: Old ski acceleration = 0.097m/s2 New ski acceleration = 0.26m/s2

Q: Why do lighter object experience more air resistance than heavier object

A: SOlution: The lighter object experience more resistance than the heavier objects

Q: Dry wood on the soft plastic coefficient of static friction I'm not asking soft plastic on wood, I'm…

A: Given:Consider friction between wood and plastic to find out the coefficient of static fricton…

Q: a rope is stuck with a mass of 10 kg. Calculate the tensile forces in the rope.

A:

Q: Trucks that carry gasoline often have chains dangling from their undercarriages and brushing the…

A: Trucks that carry gasoline often have chains dangling from their undercarriages and brushing the…

Q: A passenger is standing on a scale in an elevator. The building has a height of 500 feet, the…

A: Draw the free-body diagram of the passenger with scale when the elevator is accelerating downward…

Q: Stand facing the edge of an open door, one foot on each side of the door. You will find that you are…

A: When facing the edge of the door and attempting to stand on your toes, there must be a forward shift…

Q: 3. A 2.00-m long air track rests on a horizontal surface with a 10.0-cm high support under one end.…

A: Given: Length of the air track, L = 2 m Height of the track, H = 10 cm Mass of the glider, m = 50 g…

Q: The normal force: * Always points straight up O Is always equal to the force of gravity Always…

A: normal force usually points straight up when the object is placed on a horizontal surface.Also, the…

Q: While catching a cricket ball . the player lowers his hand . Why?

A: From Newton’s second law of motion.

Debye Theory of Solids

In solid-state physics, debye theory is used to estimate the phonons contributing to the specific heat capacity in a solid. It explains that the specific heat is a consequence of the vibrations of the atomic lattice of the solid, which is in contrast to the Einstein model. In the Einstein model, solids are treated as independent, non-interacting quantum harmonic oscillators. This model clearly explains the low-temperature dependence of the heat capacity, which is proportional to T3. This is known as Debye T3 law.