How does gravity work, and what is its importance?

Q: Mass of a car is 230 kg, calculate the weight?

A: Given data:   Mass (m) = 230 kg Required: Weight (W)

Q: An object suspended from a rope falls at a constant velocity downward, i.e. the tension in the rope…

A: Free fall is defined as the motion of the object where gravity is the only force acting upon it.…

Q: 1. Tom, the cat, is chasing Jerry, the mouse. Jerry runs past Tom at 10.00 m/s. At the same time…

A: Data We have velocity of jerry ,v=10m/s acceleration of tom ,a=3.00m/s2

Q: Two blocks are attached by massless strings and accelerated to the right on a frictionless…

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Q: Which of the following will reach the maximum height?   a. A golf ball is hit at an angle of 45°…

A: A) Given Data : The angle of the launch of the golf ball is given as θA=450 The initial speed of the…

Q: Does refraction make a swimming pool seem deeper or shallower? Explain as substantial as possible

A: When one sees the bottom of a pool, the light travels from the pool through the water and comes to…

Q: A disk of mass 2.00 kg and diameter 50.0 cm is rotating without slipping across a level floor at a…

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Q: (middle C). The speed of sound in air at 20.0°C is 343 m/s. the Roles of a well-designed flute are…

A: Data we have speed of sound waves,v=343m/s frequency,f=261.6Hz To find the length of the flute…

Q: Q 2) When two capillary tubes of the same radius are immersed in two containers, one containing…

A: The given question is based on the phenomenon of capillarity. Capillarity is the tendency of a…

Q: 7. The dimensions of a rectangular metal bar are 6 cm x 8 cm x 9 cm. density of the bar in gram per…

A: The density is given as  D = M/V = 4/(0.06x0.08x0.09) = 9260 kg/m3  Hence the first option is…

Q: ) Two figure skaters, one weighing 625 N and the other 725 N, push off against each other on…

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Q: An airplane heading due east at 215 km/h is blown off course by a strong wind of 65 km/h blowing 45°…

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Q: • The mass and speed of the three vehicles, A, B, and C, are shown. Rank them from greatest to least…

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Q: A projectile is fired at an upward angle of 45.6° from the top of a 342m cliff with a speed of…

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Q: A boy named Jose walks westward for 5 km and then northward for 5 km and then 5 km southwest. If he…

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Q: A radio station operating at 900 kHz frequency uses a monopole antenna. The antenna length (A) if it…

A: The following question lies in the topic of electromagnetic waves and telecommunication. In…

Q: In the figure, block A (mass 1.9 kg) slides into block B (mass 2.2 kg), along a frictionless…

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Q: 8. Which of the following statements are true about discharging? * 1.The voltage across the resistor…

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Q: Two charged spheres are 5.60 cm apart. If they are moved to a distance of 10.4 cm, what is the…

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Q: Object 1 has a greater mass than object 2. a. When a constant force is applied to object 1, it…

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Q: the amount of sound energy being trasnferred per unit area is called the pressure.

A: in this question  we discuss about sound energy  transfer per unit .

Q: A grinding wheel 1.40 m in diameter rotates with angular speed 1340 rpm. What is the linear speed of…

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Q: Q/ If F1 = 250 N and F2 = 375 N are two forces, the angle between F1 and the positive y-axis is…

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Q: The ratio of the distribution of the atoms in the sapphire laser that produces A beam of light of…

A: The wavelength of the beam of laser light, λ=5×10-3 A∘ Temperature, T=300 K

Q: The diagram below shows the arrangement of three small spheres, 4, B. and C, having charges of 3q,…

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Q: 1. Please help me answer A and B. Well explained please. A. Sets out the two postulates of Albert…

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Q: QUESTION 6 Which of the following is NOT an example of accelerated motion? OA.A swinging pendulum…

A: (6) In projectile motion there no  any acceleration in horizontal direction therefore velocity in…

Q: Find the value of mass Force=111 N Acceleration=1.77 m/s2

A: force (F) = 111 N Acceleration (a) = 1.77 ms2

Q: a rigid assembly of a thin hoop (of mass m = 0.25 kg and radius R = 0.19 m) and a thin radial rod…

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Q: 8. A spring is stretched 200 mm by a 15-kg block. If the block is displaced 100 mm downward from its…

A: in this question  we use equation  of simple harmonic motion.

Q: QUESTION 10 0.3 m 70° m 1 m 4 kN 0.5 m 1.5 m 15 kN m 10 KN 6 kN 0.3 m Replace the three horizontal…

A: Equilibrium of a body:The body is taken into account  to be in an  equilibrium condition  if the…

Q: a. The word " _" is used to designate sound waves with frequencies greater than 20 000 Hz. b. A high…

A: A sound is a vibration that propagates through a medium such as solid, liquid, or gas in the form of…

Q: Find the weight on earth of a body whose mass a) 300 kg b) 250gm

A: Part (a): Given:The mass of the object is 300 kg.

Q: In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using…

A: Work done by a constan force is given by W=F→.S→W=FScosθWhere θ is the angle between F→and S→.

Q: 5. For the convex lens shown, measure the focal length f. Measure the object distance, p. cm. Trace…

A: When the rays comes parallel to the princple axis, after refraction it passes through the center.…

Q: Please answer these questions well explained. Scientists observe an electron travelling at 0.98 c.…

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Q: A radar wave reaches the target at a time of 2 x 10-4 sec. The corresponding radar range is

A: Given Information The target time taken by the wave is given as t = 2 x 10-4 s.   Known…

Q: A gasoline engine has a compression ratio of 6.00 and uses a gas for which ? = 1.40. What is the…

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Q: A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 4.78 g coins…

A: In the given question, a meter stick balances horizontally on a knife-edge at the 50cm = 0.5meter…

Q: Four forces are exerted on the eyebolt as shown. If the net effect on the bolt is a direct pull of…

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Q: A TRANSMISSION LİNE TRANSMITS AN ELECTROMAGNETIC WAVE AT THE SPEED OF LIGHT, ITS ANGULAR FREQUENCY…

A: Given : Speed of light = 3 *108 m/s Angular frequency = 108 rad/s

Q: A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 4.78 g coins…

A: The solution for this question is given below...

Q: = (b) In the figure below, block 1 of mass m₁ slides from rest along a frictionless ramp from height…

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Q: Find the value of force applied if work done is 215 J and displacement is 8 m.

A: Introduction :  In this question we are provided with value of displacement and work done . with…

Q: S How V = 2√ 80 - S +1 much time does it take to stop

A: Given Speed is defined as the ratio of distance to time v=dt Where, d is the distance, d=s t is the…

Q: The average distance from the centre of Earth to the centre of the Moon is about 384 000 km. The…

A: Write the expression for the average velocity of the Moon. Here, R is the average distance between…

Q: A golf ball is hit at an angle of 32.5° above horizontal with a speed of 60 m/s. How high does it…

A: Given angle=32.4° Initial speed(u)=60 m/s Required

Q: Using ray diagram, draw the image formation by a CONVEX LENS when the object is found: 1. Beyond 2F'…

A: Rules for image formation: 1. A ray parallel to the principal axis after reflection from the lens…

Q: Radio station operating at kHz Equivalent to a dipole of half- wavelength is

A: Expression of wavelength: λ=cf Substitute the values. λ=300000000900×1000=333.33 m

Q: A 50.0 cm long wire is carrying a current of 1.5 Amps at 30° N of W in a magnetic field of 2.0 T…

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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.