A block is on a frictionless horizontal table on Earth. This block accelerates at 1.9 m/s2 when a 90N horizontal force is applied to it. The block and table are then set up on the Moon where the acceleration due to gravity is 1.62 m/s2. What is the weight of the block on the moon?

Q: Two blocks are connected by a massless rope as shown below. The mass of the block on the table is m1…

A: The objective of the question is to calculate the magnitude of acceleration and the tension in the…

Q: A 2-kg body of mass is moving on a horizontal frictionless surface with a velocity of 4 m/s. What is…

A: Mass of body (m) = 2 kg velocity (v) = 4 m/s time (t) = 5 seconds

Q: You are riding in an elevator on the way up to your apartment. The elevator is accelerating upward…

A: Given: Upward acceleration of elevator is 1.2 m/s2 Mass is 30 kg Kinetic friction coefficient is…

Q: At the end of a roller coaster ride, the cars must slow to a stop, but the magnitude of the…

A: Given information: Mass of the car (m) = 2400 kg Maximum allowed acceleration (a) = 1.6 g = 1.6 ×…

Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.9 m/s2. (a) If…

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Q: Zach, whose mass is 77 kg, is in an elevator descending at 12 m/s. The elevator takes 3.2 s to brake…

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Q: Tim pushes a 195kg lawnmower with a force of 850N at an angle of 35 degrees with respect to the…

A:

Q: With the help of a rope you want to drag a crate of mass equal to 150 Kg. The coefficient of kinetic…

A: Static friction is the force between an object and a surface, which acts against any moving object…

Q: Two blocks are arranged at the ends of a massless string as shown in the figure. The system starts…

A: Given m=4.36kg, M=5.77kg. Let a be the acceleration of the system. From the FBD of mass m, T - mg=-…

Q: You walk into an elevator, step onto a scale, and push the "down" button to go directly from the…

A: Given Data: The normal weight is: w=635 N The elevator move with constant speed (v=0). So, the…

Q: A child’s model boat, when placed in a creek, accelerates from rest at 1.4 m/s2. If the river is…

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Q: ength of the barrel, and it exits the barrel with a speed of 730 m/s. Assuming that the acceleration…

A:

Q: A child’s model boat, when placed in a creek, accelerates from rest at 1.51 m/s2. If the river is…

A: Initial velocity = 0 msAcceleration (a) = 1.51 ms2Force (F) = 0.79 N

Q: #2. A uniform board is leaning against a smooth vertical wall. The board is at an angle above the…

A: (2) Let L be the length of the board and θ is the smallest angle the board makes with the ground…

Q: 24. You are riding in an elevator on the way up to your apartment. The elevator is accelerating…

A: Given: In this question, the given details are, You are riding in an elevator on the way up to your…

Q: Because you wanted space, you woke up on unknown planet. While thinking you dropped a 150-g stone…

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Q: After a day of testing race cars, you decide to take your own 1460.7 kg car onto the test track.…

A:

Q: A 57.4 kg cart rests on a horizontal floor where the coefficient of static friction is 0.55. What is…

A: 1. To  move, the object must overcome the frictional force. and frictional force= normal force8…

Q: scientists are experimenting with a king of gun that may eventually be used to fire  payloads…

A:

Q: An elevator has a scale that measures the normal force between the contents and the floor. What…

A: Given:Mass,m= 960 kg Accelerating,a=1.5 m/s2Find  force will the scale.Now, Now,The elevator is…

Q: A firefighter who weighs 124 lb slides down an infinitely long fire pole that exerts a frictional…

A:

Q: A horizontal force of 608 N is needed to overcome the force of static friction between a level floor…

A: Horizontal force applied (F) = 608 N  Mass of crate (M) = 225 kg  Coefficient of kinetic friction =…

Q: A 4.12 N ball needs to be accelerating in the vertical direction at 20 m/s2 to reach its target…

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Q: An astronaut named Johnny is driving to their rocket when they suddenly need to break. The car…

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Q: A 75 kg astronaut brings a standard bathroom scale with him into space. What does the scale read if…

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Q: If you have a mass of 100 kg on the earth and are taken to a planet where the acceleration of…

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Q: An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45…

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Q: You hang a book bag on a spring scale and place the bag on a platform scale so that the platform…

A: Answer:   The magnitude of the force that exerts on the bag is given as:

Q: A 6.0-lb stroller resting on a horizontal floor is pulled by a 85-lb boy with a constant force of…

A: Given mass of stroller ms = 6 lb = 2.72 kg mass of boy mb = 85 lb = 38.56 kg value of Force F = 75…

Q: An elevator, moving upward, decreases in speed from 8.41 m/s to 1.70 m/s in 2.02 s. Assuming…

A:

Q: You go to slide your chair out from under the table at Thanksgiving at your grandma's house. She…

A: In the given question, Combined mass of the person and the chair (m) = 62kg Coefficient of static…

Q: Zola (the wonder dog) is told to sit and stay on a bathroom scale that reads 150 newtons with her on…

A: Given The Weight of the Zola is W = 150 N. The acceleration at which Zola moves in air is a = 2…

Q: Laila, who is a part of a critical patient's medical team was responsible for pushing a cart…

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Q: What is the Normal force and the acceleration of the object shown in the figure, where F1 = 25 N, F2…

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Q: how large does m have to be to start the blocks moving? Please answer in kilograms.

A: When the block is about to start  friction will be maximum and the forces on mass M will be balanced

Q: Scientists are experimenting with a kind of gun that may eventually be used to fire payloads…

A: Mass of projectile is Initially projectile is at rest, that is, Final velocity of projectile is Net…

Q: A lunar excursion module (LEM) weights 102.7826 slug, on earth where g = 31.9882 ft/s². What will be…

A: Given: Weight, We : 102.7826 slugwhere, 1 slug = 14.5939 kgfNow,We = 1500 kgfge = 31.9882 ft/s2gm =…

Q: ack and Jill ran up the hill at 2.9 m/s. The horizontal component of Jill's velocity vector was 2.5…

A: Given: The velocity of Jack and Jill is 2.9 m/s. The horizontal component of the velocity is 2.5…

Q: An astronaut named Johnny is driving to their rocket when they suddenly need to break. The car…

A:

Q: (a) What is the tension in the rope? (b) What is the normal force with which the snow pushes…

A: Solution: a). The tension in the rope is due to the friction present across the connecting surfaces.…

Q: Two horizontal forces, P and Q, are acting on a block that is placed on a table. We know that P =…

A: Given: The mass of the object is 5.1 kg. P→=-2.1i^+4.25k^ N The velocity of the object is constant.

Q: Superman is applying a 17,000 N horizontal force to try and stop a speeding locomotive. This train…

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Q: You bring a bathroom scale onto an elevator and press "up". Your mass is 65 kg. If the bathroom…

A: given actual mass of person(m)=65 kg Weight observed by bathroom scale(w)=750 N Mass of bag =0.1…

Q: Sam pushes toward the right on a box with a force of magnitude 31.0 N. Sarah applies an 11.0 N force…

A: (a)there is NO motion in Y-direction,F=N-mg=0N=mgN=98 Ng=9.8m/s2m=Ngm=989.8m=10Kg

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.