Which force allows hot air balloons to fly?

Q: Looking outside of your window, you notice a bird gliding in the air at a constant speed. Should air…

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Q: The wind speed is (1) The speed of the plane is (1) O hours. (2) O mph. miles. miles. mph. O hours.

A: Given data The distance between the two cities is A and B is d = 792 miles. The time interval taken…

Q: If a person has a mass of 55 kg at sea level, their mass in orbit would be:

A: Mass is the amount of matter contained in a body. It is a fixed quantity under non-relativistic…

Q: What happens to the weight reading on a scale you stand on when you toss a heavy object upward?

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Q: Consider the Washington Monument in Washington, D.C. in the United States. What forces act between…

A: The force between monument is gravitational force and normal force. refer the FBD.

Q: Which fall faster, large or small raindrops?

A: It's conventional wisdom in atmospheric science circles: large raindrops fall faster than smaller…

Q: The law of conservation of mass is same as Newton’s law

A: Newton's Law and Conservation of Mass is not the same law.

Q: When you release an inflated but untied balloon, why doesit fly across the room?

A: The untied balloon flies across the room because of the momentum carried by the air present inside…

Q: A 2 kg box is suspended in the air. Attached to each corner of the box is a rope. All 4 ropes are…

A: SOlution: given that m = 2 kg Each corner of the box attached with 4 ropes are the same length and…

Q: A woman stands on a spring scale in an elevator. At which situation is her apparent weight greates

A: SOlution: if standing on the spring scale in elevator. In what situation the weight will greater.

Q: Consider this situation: A baseball travels upward and rightward through the air. Of the forces…

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Q: The force of gravity between two objects is 50 N. Mass 1 decreases by a factor of 1/5. The new force…

A:

Q: When a man is standing on a scale in an elevator that is accelerating upward, the scale reading will…

A: When a man is standing on a scale in an elevator that is acceleration upward , the scale reading…

Q: What is the weight in Newton's of a 6.0 kg package of nails?

A: Required : What is the weight in Newton's of a 6.0 kg package of nails.

Q: • Hit water in a tub with your full palm. Your full palm represents a swimmer doing a belly flop. •…

A: Hit water in a tub with your full palm. Your full palm represents a swimmer doing a belly flop.…

Q: the force exerted by gravity on 70 kg = N. O 10 О 68 О 66

A: According to Newton's Second Law:   Force Exerted By Gravity is :    F = mg          ......(1)…

Q: astronauts appear wieghtless in space becaue 1. there is no gravity 2.there is no floor pushing…

A: To determine: Correct option for the given statement.

Q: How does the average number of drops required to break open awhelk depend on platform height for a…

A: The average number of drops required to break open a whelk depends on platform height.

Q: A boxer can hit a heavy bag with great force. Why can't he hit a piece of tissue paper in midair…

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Q: A force of attraction between objects that is due to their masses; the force that brings all objects…

A: Option - C is correct answer

Q: What is the weight in newtons of a 6.6 kg package of nails

A: Here, We have given, Acceleration due to gravity, g = 9.8 m/s2  Mass of the package of nails. m =…

Q: 6ON a = 5k3 11 しe

A: Given Data : The mass of block 1 is given as m1 = 2Kg. The mass of block 2 is given as m2 = 5Kg. The…

Q: What is meant by terminal velocity?

A: Terminal velocity is defined as the highest velocity attained by an object that is falling through a…

Q: An airplane takes 5 hours to travel a distance of 4800 miles with the wind. The return trip takes…

A: Write the expression of speeds when airplane travels with the wind. vp+va=48005vp+va=960 miles/h…

Q: Two boxes of different masses connected by a cord and were thrown upward together. If not consider…

A: In this case, two boxes of different masses are connected by a cord and were thrown upward together…

Q: and forces of the wind acting on the anchor.

A: Both questions are from kinetics. Newton's law of motion will be applicable to get the final…

Q: If an airplane is running low on fuel, the pilot may decide to dump unneeded weight. As the airplane…

A: Required : Which law of Newton used.

Q: Name all of the factors you think affect projectile movement (try to list at-least 5 factors)

A: To determine: The factirs that affect the projectile movement

Q: In order to swim, a person pushes the water backward, why?

A: According to Newton’s 3rd law, action force and reaction force are equal in magnitude and opposite…

Q: What is the net force?

A: Given data: F1 = 5 N F2 = 5 N Forces are in opposite direction Required: The net force (Fnet)

Q: The same forces act on two objects having the same masses. The more massive object will experience…

A: According to Newton's second law  Net force acting on the object is  F= m* a Where m is mass of…

Q: What is a net force? What is an unbalanced force?

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Q: Choose the BEST answer to the following: The force needed to keep a ball tolling along a bowling…

A: The ball rolling along a bowling alley is acted upon by the force of friction during its skid and…

Q: A rocket blasts off and its vertical velocity increases with time there is air resistance).  DRAW…

A: The velocity is increasing with time and the air resistance is directly proportional to the velocity…

Q: What will be the weight of a weightless bag when it is filled with water and weighed in water?

A: As the bag is floating in water (in water), it is pushed upwards by water from all four sides. The…

Q: The force of gravity on a 6-kg mass is O twice as strong as the force of gravity on a 3-kg mass half…

A: Force due to gravity on a body is given by F = mg, where m = the mass of the body and g =…

Q: A rope is used to lower a bucket of water downward into a well at a constant speed. Fora Frens Fgrev…

A:

Q: Was it easier to push a fist into the bag with no water or into the bag with water?

A: Answer We can move easily through air than through water. If the road is full of water we can't…

Q: In which of the following are action and reaction forces involved? When a tennis racket strikes a…

A: According to Newton third law of motion there is always an equal and opposite reaction for an…

Q: How does the force of gravity on a raindrop compare with the air drag it encounters when it falls at…

A: The force of gravity acts on the raindrop in vertically downward direction whereas the air drag…

Q: You jump up into the air. Which of the following is propelling you up into the air? Gravity Your…

A:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.