You often find tiny diffuse spots floating in you field of view. What causes these diffuse spots? Are they illusions? Are they dusts in the eye's surface? Or are they objects within the eye? Why do you them as concentric circles?

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: A block slides along a track from one level to a higher level after passing through an intermediate…

A: Given  vo=6.9m/s h=1.1m g=9.8m/s2 μk=0.60 d=?

Q: A cheetah accelerates constantly from rest to catch a gazelle. The cheetah covers a distance of 40 m…

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Q: For a 0.20 kg block of wood on the floor u is 0.50 and u, is 0.75. What is the force of friction…

A: Given data: The mass of block is m=0.2 kg. The coefficient of kinetic friction is µk=0.5. The…

Q: The weight of a body is 160 N. What is it's mass? Given g = 10 m/s²

A: Given in question: Weight of body(W) = 160 N                                  Gravitational…

Q: A person is trying to lift a box off the floor. The box has a mass of 55kg and the person can lift…

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Q: Mary applies a force of 70 N to push a box with an acceleration of 0.60 m/s2. When she increases the…

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Q: F e. A block with a mass of 25.5 kg is moving at constant velocity because a force of 138 N is…

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Q: After collecting so much Halloween candy, you want to find a secret place to eat it all without…

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Q: While an elevator of mass 812 kg moves downward, the tension in the supporting cable is a constant…

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Q: Wooden box of mass 408 g is placed on the glass table. The box is just started to move by applying a…

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Q: A car accident occurs when a car slides into another car at the base of a hill.  Car A was…

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Q: An incline of height 20 m and 0 = 12° has an object of mass m=1.5 kg sliding down on it. The…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

A: Given,  A wooden block sliding over a table with frictional force f. And another block having same…

Q: An Olympic skier moving at 37 m/s down a 26° slope encounters a region of wet snow of coefficient of…

A: We have given Initial speed u =37 m/s  Final speed v=0  θ=29o  μ=0.96 g=9.8 m/s2 Let R = normal…

Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

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Q: Due to a jaw injury, a patient must wear a strap that produces a net upward force of 5.00 N on his…

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Q: While playing basketball in PE class, Michael Angelo lost his balance after making a lay-up and…

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Q: Three forces acting on an object of mass 4 kg, are given by, F1= (-2.0 i + 2.0 j) N, F2 = (5.0 i–…

A: Determine the net force acting on the object as follows. F=F1+F2+F3=-2.0i+2.0j N+5.0i-6.0j N+-15i…

Q: A 4.0-kg box lies on a table. You pull it up with a force of 12 N and it doesn't move. Match the…

A: Given value--- mass = 4 kg. pulling force = 12 N. g = 10 m/s2  We have to find--- the weight…

Q: Two forces act on a 2.90 kg object, the gravitational force and a second, constant force. The object…

A: Mass of the object m = 2.90 kgAfter 1.20 s the displacement r→=4.1i^−3.3j^The initial velocity of…

Q: A 100 gram wooden block is placed on an inclined ramp and released from rest. The ramp is tilted at…

A: Given: The mass of the object is 100 g. The coefficient of the static friction force is 0.3. The…

Q: A 12 kg block rests on a 24 degree inclined frictionless surface and is attached by a light string…

A: The situation is shown in the figure                              There are different kind of the…

Q: As the cat pushes the vase with its paw, the vase moves. Then, the cat maintains a constant applied…

A: we have been given static friction and coefficient of kinetic friction and we need to find what is…

Q: I use a bucket on the end of a rope to raise/lower objects into/from my treehouse. Rather than risk…

A: Given data:  Mass of phone (m) = 0.2 kg Acceleration (a) = 1.1 m/s2, downward Required: The…

Q: Dana pushed a wooden crate that was at rest on the floor. The crate moved when she applied 49N of…

A: Given: The applied force is 49 N. The coefficient of the friction is 0.1.

Q: Consider the diagram below. The box experiences and acceleration of 5.50 m/s² when an applied force…

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Q: Fmax

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Q: 2000-kg car initially at rest is held by a friction force that can resist up to 1200 N. If the…

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Q: An airplane slows to a stop as it moves along the runway.  Its mass is 3.50 x 105 kg, its speed is…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

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Q: 13. 54-kg box is sitting on the floor of a level railroad car which is moving forward with a speed…

A: mass of box = 54 kg speed = 25 m/sa = 5.6 m/s2

Q: cted by ropes, as depicted in Figure 1. The coefficient of kinetic friction between m1 and m2 is…

A: Given: The Mass of Block 1 (m1)=2 kg The Mass of Block 2 (m2)=3 kg The Mass of Block 3 (m3)=10 kg

Q: M kg A box of mass 24 kg slides down a ramp angled at 24 degrees. The coefficient of sliding…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

A: We have a wooden box of dimensions say (x,y,z) where x is the width, y is the length and z is the…

Q: 7. A roller coaster reaches the top of the steepest hill with a speed of 6.80 km/h. It then descends…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

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Q: A cyclist coasts up a 10.0 degree slope, traveling 20.0 m along the road to the top of the hill. If…

A: Given:Initial speed,  u= 9.00 m/sAngle,  θ = 100Distance  d = 20 m

Q: A crate slides down a ramp 24.37 m long inclined at 25.71°. How long will it take to reach the end…

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Q: m = 8 kg v0 = 6 m/s F = 12 N the box reaches 10 m in 1.4 seconds If you wanted the box to reach a…

A: m = 8 kg v0 = 6 m/s x = s = 10 m t = 0.761 s F = ?

Q: A pack of four velociraptors have caught a human running through their jungle. Each raptor grabs one…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

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Q: Now the block on the table has friction.  Calculate the frictional force if the block is stationary.…

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