1) An object of mass 750g drops from a height of 5.1m. What is its velocity when it reaches a height- of 1.3m? (Use energy to solve this.)

Q: ar A has a mass of 1000 kg and a speed of 60 km/hr and car B has a mass of 2000 kg and a speed of 30…

A: We know that the kinetic energy of the object is defined as the energy of the object due to the…

Q: psi is a unit of force. Group of answer choices True False

A: Required:  Psi is a unit of which physical quantity

Q: The centripetal force on a car rounding a curve on a level road is provided by Select one: a. The…

A: The centripetal force on a car rounding a curve on a level road is provided by

Q: lowest frequency string on a guitar is 65.5 cm long and is tuned to 80.0 Hz. If the string has a…

A: Given Length L = 65.5 cm = 0.655 m Lowest frequency= fundamental tone = 80 Hz Mass of string = 3.31…

Q: I need help with this problem.

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Q: What is the speed of a transverse wave in a rope of length 4.5 m and mass 45 g under a tension of…

A: Given data:  Length (L) = 4.5 m Mass (m) = 45 g = 0.045 kg Tension (T) = 590 N Required: Speed (v)

Q: For the given cyclic process CAB as shown for a gas, the work done is A 6.0 5+ 4+ p (Pa) 3+ 2+ 1. 4…

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Q: A thin layer of oil (n=1.28) spills onto the surface of a nearby lake (water has n=1.33). It…

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Q: 12. Johnny drew the following electric field lines for a configuration of two charges. What did…

A: Electric fire lines start from positive charge and terminate at negative charge .

Q: The rocket leaves the ground from rest and reaches a height of 1000 m seconds. What is the average…

A: We know that the formula of the average  velocity is given as  velocity avg= distance Time  We also…

Q: A block of wood with a mass of 0.57 kg is floating on the surface of a lake. What is the magnitude…

A: We have a block of wood of mass m=0.57 kg which is floating in water (Density around 1000 kg/m3) and…

Q: In preparation for the qualifying matches for the national competition of Javelin sports, a javelin…

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Q: A 100g flea stands on the end of a 1.0 cm long sweep second hand of a clock that rests horizontally…

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Q: The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume…

A: Given, 5gram of oxygen at a pressure P and temperature T and occupying a volume V

Q: A transformer has 80 turns in its primary coil and 50 turns in its secondary coil. If the current in…

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Q: A current of 5.75 A flows in the coil of wire from an applied voltage of 120 V. The motor operates…

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Q: A passenger train of length 60 m travels at a speed of 80 km/hr. Another freight train of length 120…

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Q: which of the ff. is a vector quantity? a. Pressure b. Force c. Energy d. Potential Difference e.…

A: Given:- many partss related to vector.

Q: 6. Give one condition for resonance to occur in a series RLC circuit.

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Q: Consider an atomic nucleus that’s moving at a speed of 500m/s. This nucleus emits an alpha particle…

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Q: A 100 kg block is pulled at a constant speed of 5.5 m/s across a horizontal floor by an applied…

A: Given data:  Constant Speed (v) = 5.5 m/s Force applied (F) = 137 N Angle (θ) = 37° Required: Power…

Q: The fan blades on a jet engine make one thousand revolutions in a time of 83.9 ms. What is the…

A: Given data:  Angular displacement = 1000 rev Time (t) = 83.9 ms = 83.9×10-3 s Required: The angular…

Q: If a mass of liquid is translated horizontally at a constant acceleration of 4.5 m/s², find the…

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Q: 6. Steam at 100 °C is bubbled into 2.70 kg of water at 15 °C in a calorimeter cup. How much steam…

A: Given : Amount of steam bubbled to water, m = 2.7 kg = 2700 g Temperature of calorimeter cup at this…

Q: Two parallel wires that are separated by a perpendicular distance of 2.0 cm carry currents of 5.0 A…

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Q: 1. What is the electric field strength at a distance of 10 cm from a charge of 2 uC?

A: Given that                     The charge (q) = 2μC We need to find out the electric field at 10cm =…

Q: longitudinal wave, such as a sound wave, can travel through

A: A longitudinal waves such as sound waves requires material medium to travel. Let's check each option…

Q: Two wires, A and B, are made of the same metal and have equal length, but the  resistance of wire B…

A: Two wires, A and B, are made of the same metal and have equal length, but the resistance of wire B…

Q: A person standing on an open ground hears the sound of a jet aeroplane, coming from north at an…

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Q: A plane electromagnetic wave, with wavelength 2.9 m, travels in vacuum in the positive direction of…

A: Given Speed of light = 3 X 108 m/s Wave length λ = 2.9 meters Electric field magnitude E = 420 V/m…

Q: A 60-kg man plunged at 18 m/s at the bottom of water slide. If the height of the water slide is 20…

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Q: A wheel initially has an angular velocity of 36 rad/s but after 4.0s its angular velocity is 24…

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Q: The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first…

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Q: The pressure exerted by 1 м 3 V symbols have their usual meaning. Using standard gas equation, PV =…

A: Write the Boltzmann constant. k=1.38×10-23 J/K

Q: #7. What is the direction of the magnetic force on wire 2 from wire 1 ? A) left B) straight away…

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Q: Determine the acceleration of the system shown. 30 12 kg 8 kg

A: Acceleration of the system = 2.536 m/s^2

Q: ith focal length f = 30 cm is used to view an object 90 cm from the lens. How far from the lens does…

A: We know that the lens formula is given as  1f= 1u+1v where f is the focal length of the lens  u is…

Q: A gardener applies a force of 190 N, at an angle of 50 degrees to the horizontal, in order to push a…

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Q: VI is a vector 30m in magnitude and points at an angle of 23.4° above the negative x axis. V2 is a…

A: According to question we need to find magnitude and direction of resultant vector.

Q: A ball moving at 0.95 m/s collides with a stationary ball. After a collision, they separated with…

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Q: (1a). Figure shows a person is warming his hands over the fire. Explain in detail how the heat…

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Q: |(II) A mass M is ring shaped with radius r. A small mass m is placed at a distance x along the…

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Q: An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height…

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Q: 33. At a point above the surface of earth, the gravi- tational potential is - 5-76 x 10' J kg- and…

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Q: Fa simple pendulum is 2.2 s. The length of the pendulum is doubled. What is the period T of the…

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Q: A black hole is an object so massive that not even light can escape, one way to define the size of a…

A: As given we will find the radius where the escape velocity will be equal to speed of light

Q: 4. Analytically solve: 3m N+ 5m S+ 2m S+ 7m W+ 4m E

A: Given 3m N + 5m S + 2m S + 7m W + 4m E  Expressing in terms of i and j  Taking i as positive x-axis…

Q: 21 It is well known that any radiocar only 0.5 percent of thorium disap 1. What is the half-life of…

A: (i)The half life of a substance is the amount of time it takes a substance to decay to its half…

Q: What special relationship can be observed if you have a number of resistors with the same ohmic…

A: Suppose we have N number of resistor in series with same ohomic value (=R) then the equivalent…

Q: small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: Given  At x =0, is given a push to left with an initial speed of 2.60 m/s.  So  Total energy at x=0…

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.