If an object starts traveling at 20 meters per second and deaccelerates at 2 meters per second squared, how far will it have gone in 5 seconds?

Q: A rectangular billboard in space has the dimensions 10 meters by 20 meters. How fast and in what…

A: Length contraction occurs only along the direction of motion. It needs 20 m side to appear as the 10…

Q: Why is modern physics important?

A: Present day Physics is a part of physical science that arrangements with the major idea of the…

Q: What would the expected Doppler shift be for an object moving away from the observer?

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Q: Anything that has mass and occupies space is defined as___________.

A: Matter is anything that has mass and occupies the space. Examples: Table, pen, clouds, etc.

Q: How much time (in seconds) does it take light to travel 1.90 billion kmkm?

A: Given Distance (D) = 1.9 billion km                        = 1.9 × 109 km                         =…

Q: Convert to SI and write in scientific notation: 1) 1.282 light-seconds to m 2)1 acre to m2

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Q: What is second postulate of special relativity?

A: Relativity is a theorem, formulated by Albert Einstein, which states that space and time are…

Q: While mark is in training for the upcoming athletic competition ,the needs to drink water at least…

A: Given: The number of times Mark needs to drink is 5. The quantity of water for a day is 500 mL. The…

Q: Under influence of the net force, a car with mass 800 kg reaches speed of 15 m/s, within 5sec. What…

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Q: What is the mass of ice at -7 0C needed to cool 6.51 x 10-4 m3 water from 20 0C to 3.4 0C?

A: Given,

Q: How fast are the protons going now?

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Q: hen γ is 1.27, what is β?

A: The expression of the γ is given by                     γ = 11- v2c2here  β = vc                  γ…

Q: It is basic principle that every physicist has to take ___________ and then perform __________ in…

A: We are asked to consider the basic principle of physics in order to fill the blanks

Q: Write the exponential form of the following: 5. 4670000000 6. 0.000893 7. 344500 8. 230000

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Q: What is the change in volume of the coin after the temperature change of 100 C°? * O 3.9 × 10-5 m )…

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Q: According to the Eistein's equation, how does the amount of energy in a kilogram of feathers compare…

A: We know, E=mc2

Q: According to the equation, ? = ??², how does the amount of energy in a kilogram of feathers compare…

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Q: The cubit is an ancient unit of measurement for length, where 1 cubit is approximately 444.25 mm.  A…

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Q: H.W 2: a-A person walking at (1 m/sec) hits his head on a steel beam Assume his head stops in (0.5…

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Q: A room measure 50, how many (cm2) does this represent. _____________.

A: The measured area of the room is given as, A=50 m2

Q: It is prior responsibility of every physicist to take _________ and do __________ in order to…

A: It is basic formulation of scientific method

Q: I performed a lab using a toy car to go down a ramp that was positioned at different heights. For…

A: Here the total distance traveled by toy car in 0.67s should be equal to the horizontal distance…

Q: What is the speed of a 2.5-kilogram mass after it has fallen freely from rest through a distance of…

A: initial velocity , vi=0                           d = 12 m  final velocity      vf = ? We know that…

Q: Oscillation time of a mathematical pendulum (clock) calibrated at temperature 20 °C, is 5,000 s.…

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Q: What do you understand by time-like interval?

A: There are different types of intervals based on the space-time intervals between the events such as…

Q: If the speed of light is 3.00  105 km/s, how many kilometers are in a light-year?    How many…

A: Light year is the distance covered by light in a year. Number of kilometers are in a light-year,…

Q: What are some science ideas??

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Q: Do you think physics plays a great role in medical fields? If so, how?

A: Physics is a department of science in which various dynamics concepts or laws about the physical…

Q: What does modern physics talks about

A: Modern physics is an effort to understand the underlying processes of the interactions of matter…

Q: What did Einstein call his “greatest blunder”?

A: Required : What did Einstein call his 'greatest blunder'.

Q: How much time is needed for a force of 20 Newtons to change the velocity of a 5 kilogram mass by 4…

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Q: By converting the mass of one person (68 kg) completely into energy, how much energy may be…

A: According to Einstein relation  when a mass m is converted into energy,  E=mc2 Given: Mass of person…

Q: What is the mass of an electron? Also, mention the mass of a proton.

A: Required: The mass of an electron and a proton

Q: nvert 50 feet per second to miles per hour. 1.7 The speed limit in some countries is 100 kilometers…

A: We know that the conversion as  1 meter = 3.28084 feet  Now  1 feet per sec = 0.681818 miles per…

Q: James is standing on top of a hill. How talll is the hill if Jamrs has a mass of 86 kilograms and…

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