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Q: A stone drops some distance and gains 30 J of kinetic energy. Do NOT ignore air resistance. How much…

A: Given :-  A stone drops some distance and gains 30 J of kinetic energy . Air resistance is there .

Q: Hi for step 2 why didn't you use the displacement formula ? d=d2-d1

A: It is because  displacement is given by area under Velocity time graph  i.e  Displacement = Area…

Q: In the figure R₁ = 5.52 0, R₂ = 16.6 Q, and the ideal battery has emf ε = 12.9 V. (a) What is the…

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Q: Compute pressure Force=0.112 N Area 0.3 mm2

A: Given data : Force=F Area=A   Required : Pressure

Q: The gradient of velocity versus time graph is equal to

A: The gradient of velocity versus time graph is equal to the  acceleration.

Q: The tension on the string is: a.greatest in I b.greatest in III c.least in I d.least in III…

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Q: Calculate its speed

A: Given data; An artificial satellite is moving in a circular orbit,  radius,r= 42250 kmCalculate its…

Q: . A train is travelling at a speed of 90 km h¹. Brakes are applied so as to produce a uniform…

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Q: A resistor R is connected in parallel with a 10-ohm inductive reactance. The combination is then…

A: In this question we have to find the value of Resistance R. Please give positive feedback if the…

Q: A crate of mass 30 kg is pushed along a floor with a force of 120 N for a distance of 26 m.…

A: Given  Mass (m) = 30 kg  Force (F) = 120 N  Distance (s) = 26 m   work done is given as :-  Work…

Q: he movers are trying to get a heavy crate (mass m) up a ramp into the loading dock of a uilding. One…

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Q: 1. A 40.0 kg rider is upside down at the top of a vertical circle that has a radius of 8.00 m. At…

A: Given, In the problem 1, Mass of the rider M1=40 kg.  The radius of the vertical circle (R) =8m. In…

Q: A 500-N tightrope walker stands at the center of the rope. If the rope can withstand a tension of…

A: In the given question, Maximum tension in the rope  = T = 1800N Weight of the walker  = W = 500N Let…

Q: To accelerate an object to a rate of 3 m/s², 34 N force is required. Calculate the mass of object?

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Q: Three model rockets have just had their engines turned off. All of the rockets are aimed straight…

A: rocket A : mass = 700 g initial velocity = 30 m/s rocket B : mass = 500 g initial velocity = 40 m/s…

Q: Consider the toy represented in the image. This toy is made by attaching a ball of mass m to a…

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Q: A box with mass of 8 kg is released from rest on a surface that exerts friction on the box. The…

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Q: the moment of inertia.

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Q: The intensity level of the rustling of leaves is

A: the rustling leaves make a very low sound. This sound has a low intensity and hence a low loudness…

Q: An 85 kg mass has an acceleration of 5.5 m/s². What is the net force applied?

A: Introduction :  In this question we are provided it value of acceleration and mass . With these data…

Q: A 1.5-m length pendulum is displaced by an initial angle = +6° and released from rest. If the…

A: Frequency of oscillations is proportional to acceleration due to gravity and inversely to length for…

Q: Jon Snow has a mass of 70 kg. He jumps down by 1m and hits ground 0.02 s. If he did not bend his…

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Q: (I) A service station charges a battery using a current of 6.7 A for 5.0 h. How much charge passes…

A: In this question we have to find the charge passing through the battery. Please give positive…

Q: A box with a mass of 5 kg is moving with acceleration of 0.5 m/s². Find the force applied to this…

A: Given data : Mass=m Acceleration=a     Required : Force

Q: Find the momentum Mass=0.99 kg Velocity=1.1 m/s

A: Given data : Velocity=V Mass=m   Required : Momentum

Q: There is at least one more.

A: A block placed on a rough inclined surface is used to compress a spring that is parallel to the…

Q: A bar has a linearly increasing density, so the density at one end is five times the density at the…

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Q: 4. A car accelerates a) 2 m/s² from rest (0) to (1= 36 km/h) in 5s. The car acceleration is: b) 4…

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Q: 5. A car slows down from (v-20 m/s) to (= 10 m/s) in 5s. The car acceleration is a) 2 m/s² b) 4 m/s²…

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Q: The angle of incidence is always to the angle of reflection.

A: The incident rays comes with some angle and it is known as incidence angle. The reflected ray comes…

Q: 1. In a piston cylinder system, the gas an initial pressure of 100 kPa and expands from 1.5 m³ to…

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Q: afor a particle with mass m and position vector r(t) the angular momentum is defined as L(t) = r(t)…

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Q: Calculate the magnitude of the tension T and the angle 0 for which the eye bolt will be under a…

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Q: Determine the resultant R (single equivalent force) of the three forces acting on the simple truss.…

A: In this question we have to find the Resultant in vector form. Please give positive feedback if the…

Q: For scientific work, the temperature scale is used

A: Required temperature scale used for scientific work.

Q: 5. A car slows down from (v-20 m/s) to (= 10 m/s) in 5s. The car acceleration is a) 2 m/s² b) 4 m/s²…

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Q: 4. A car accelerates a) 2 m/s² from rest (0) to (1= 36 km/h) in 5s. The car acceleration is: b) 4…

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Q: eeping the plate charge constant, what relation do you find between the voltage and capacitance?…

A: The expression for the capacitance of capacitor is    C=QV Here Q is the charge on the plate and V…

Q: Calculate the work done by a student in lifting a 0.3 kg book from the ground and keeping it on a…

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Q: A trolley, while going down an inclined plane, has an acceleration of 2 cm/s². What will be its…

A: Given:- acceleration of trolley a= 2 cm/s2 Initially trolley is at rest so u = 0 cm/s Time for…

Q: A pressure gage connected to a tank reads 50 psi at a location where the barometric reading is 29.1…

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Q: Find the pressure Force=0.2 N Area=0.1 cm2

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Q: F = 8 Gm₁m₂ 2 r Two masses, m₁ and m₂ are separated by a distance, r. The force of attraction…

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Q: Find impulse Force=0.33 N Time 5.1 s

A: Given data : Force=F Time=t   Required: Impulse

Q: 14. (II) Calculate the ratio of the resistance of 10.0 m of alu- minum wire 2.2 mm in diameter, to…

A: Given : Lal = 10 m dal = 2.2 mm = 2.2 × 10-3 m Lcu = 24 m dcu = 1.8 mm = 1.8 × 10-3 m

Q: A material with a density of 5 plem' and a volume of 20 cm' has a mass of 25E 50 R

A: Given data : Density=ρ Volume=V   Required : Mass

Q: One-third of the first period, one at 2m / s, the third, at 3m / s and the last one at 5m / s.…

A: Average speed = total distance/ total time taken  Let the total distance be d. Time taken for the…

Q: (a) A cosmic-ray proton in interstellar space has an energy of 21.0 MeV and executes a circular…

A: a) Charge of a proton q = 1.6*10-19c Given, energy E = 21.0MeV = 20.1*106eV                        E…

Q: frequency of the He line of the Balmer series for hydrogen. Calculate (a) the wavelength and (b) the

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Q: A 4.0-kg object is moving with speed 2.0 m/s. A 1.0-kg object is moving with speed 4.0 m/s. Both are…

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Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.