If a barchall ie thriawn at Hom/ and 0.60 k what force x itx ditrectin its maek to chunge neceas

Q: 1- If a rod travels with a speed v 0.8 c along its length, how much does it shrink

A:

Q: Calculate the rate at which the human body radiating energy when it is at 36.5 °C. Take the body…

A: Given : Temperature = 36.5∘C = 36.5∘C + 273 = 309.5 K Body surface area = 1.37 m2

Q: (II) An internal explosion breaks an object, initially atrest, into two pieces, one of which has 1.5…

A:

Q: A bag of wheat weight 250 7o what heigt 'should it te /aiged so that Poterdial energi SO 96 00 J…

A: mass of bag of wheat (m) = 250 kg potential energy (U) = 9600 J g = 9.8 ms2

Q: The thermal energy in 8.0 kg of water at 30°C increases by 8000 J. What is its new temperature?

A:

Q: Calorinatrny Hemourt s You pour 750 g of het coffee into aluminua s 250g. You measured Ha 90°C. You…

A: According to principle of calorimetry Heat given by hot body= heat taken by cold body

Q: An 1100 kg car moves at 22m/s. Neglecting friction, what braking force is needed to stop the car in…

A: CONCEPT: Given, Mass of the car is m = 1100 kg. Initial velocity of the car is u = 22 m/s. Time is t…

Q: A commercial fishing boat uses sonar equipment to detect a school of fish 2 miles east of the boat…

A: (a) The direction of the boat should be head to east direction at speed of 20 mi/hr.

Q: (II) A 65-kg person decides to lose weight by sleeping onehour less per day, using the time for…

A: The mass of the person is 65 kg.   Person decides to sleep one hour less and using the time for…

Q: Discuss why a 1-ft2 hole in a ceiling that admits sunlight when the Sun is overhead is like having a…

A:

Q: A small gasoline‐powered car weighs 1100 kg. The rear seating weighs 34 kg. How much energy and…

A: GIVEN Weight of the gasoline powered car = 1100 kg rear seating weighs 34 kg Lifetime of the car =…

Q: (W/m), in Santa solar radiation into energy. solar radiation (w/m?} 400 300 200 100 4 8 12 16 20…

A: We have been given curve of intensity of the solar radiation with respect to time. 18% of this…

Q: one 3/2122 DAY 5-8ih Grade Stience STAAR Review Name Date, 9. Consider the two nxampies below In…

A:

Q: A energiy of S x133Mer 3 x15° Me VIC particle has a total and momentum of rest mass '? w hat is 4]…

A:

Q: calculate the reverberation time at 500hz for a conference room that is 12 ft wide, 20 ft long and…

A:

Q: Suppose a 10.00-kg mass drops through a height difference of 3.00 m, and the resulting work is used…

A: The gravitational potential energy is calculated by using the formula E=mg∆h , where m=10 kg is the…

Q: A gap must be left between the ends of a steel railroad rails top revent them from touching when…

A:

Q: 12V 40 mite b. GV

A: Kirchhoff's first law Sum of current towards a junction = sum of current moving away from junction

Q: Calculate the kinetic energy in joules of a 76 kg traveling at 5-14 m/s?

A: Given data :                    Mass  =  m                   Velocity  =  v        To find :…

Q: A-0.02C object is placed into a 20V potential. How much energy does it have? O 04J O 0J O 04J

A: since we know that work done required to move an electric charge of q coulomb through an electrical…

Q: Taking VBg into account in Figure 5–39, how much will /g change with a temperature increase from…

A:

Q: much tim is neded do measure The (a) How Kinetic enegy of an electron whose sPeed 10:0m/swith an…

A: From Uncertainty principle ∆E∆t=h4π The uncertainty is no more than 0.100%…

Q: An aluminum rod is 20.0 cm long at 20°C and has a mass of 350 g. If 10 000 J of energy is added to…

A:

Q: A tennis ball bounces on the floor three times. If each time it loses 22.0% of its energy due to…

A: Total energy = 1 unit Balance after first collision = 0.78 unit Balance after second collision =…

Q: ot a 51 g ring consta tched by 0. s the pebble

A: We know that As per given The catapult is initially stretched by  x =0.2 m  The pebble files let a…

Q: An airplane, of overall length 55 ft, is designed to fl y at680 m/s at 8000-m standard altitude. A…

A: The Mach number of the airplane is given by, Here, v= 680 m/s denotes the velocity of the airplane…

Q: We cannot move a finger without disturbing all stars. Explain.

A: The reason for the above statement lies in the gravitational influence that the massive bodies exert…

Q: A man is driving his 4.5 m long automobile at 90 kph when the traffic signal in front of him changes…

A:

Q: Q/ Prove that the specific heat according to Einstein's model: (a) agrees with Dolonck's law and…

A: In the Einstein model, the N atoms could be considered as an array atomic oscillators vibrating in 3…

Q: Suppose that the 800 W of radiation in a microwave oven is absorbed by 250 g of water in a very…

A: Given: The power of radiation is 800 W. The mass of water is 250 g. The initial temperature is 20°C.…

Q: A-0.02C object is placed into a 20V potential. How much energy does it have? O 06J O 04J

A: (a) -0.4J

Q: You are flying on a plane. Your friend is on the ground. If you take a nap on the plane, which of…

A: From general theory of relativity ,if speed of reference frame keeps on increasing then time…

Q: If I were in space, how long would it take to get hypothermia ( ΔT = -2 °C). Assume I am essentially…

A: According to Stefan’s law,

Q: What is the typical speed of a helium atom in a child’s balloon at a room temperature of 20°C?

A:

Q: Jou pour 750g of hot cof'fee iato aluminum mess is 2sg. You measured He 90°C. You thee cup wkose…

A:

Q: A meteor melts when it enters the Earth’s atmosphere. Assuming that the meteor is primarily made of…

A:

Q: Calculate the kinetic energy in joules of a 84 kg traveling at 4.26 m/s ?

A: Given data :                          Velocity  =  v                            Mass    =  m…

Q: How much energy is needed (in Joules) to convert 9.6 kg of ice at -31° C to water at 84°C? Specific…

A:

Q: On a cold morning, the rear window defroster on a 2002 Pontiac Aztek supplies 240 Watts of power to…

A: Given data The power supplied by the defroster is given as P = 240 W. The mass of the ice is given…

Q: Since the heavy particle remains fixed, before and after the motion of the lighter particle, it does…

A: From the energy conservation, we conclude,…

Q: Dimpho decides to fill hot water bottles to tuck between the sheets at the foot of the beds. If she…

A: Given data: Volume of water is,V=4.0 L=4.01000=0.004 m3. Initial temperature is, T1=10.0∘C. Final…

Q: The casing of a rocket in flight burns up due to friction. At whose expense is the heat energy…

A: The casing of a rocket in flight burns up due to friction. Heat energy required for burning of…

Q: A 2.80-g lead bullet at 28.0°C is fired at a speed of 200 m/s into a large block of ice at 0°C, in…

A: The mass of the bullet, m = 2.80 g = 2.80×10-3 kg The temperature, T = 28°C = 28 + 273 = 301 K The…

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.