Q5: A 4 kg block is attached to a vertical rod by means of two strings of equal length. When the system rotates about the axis of the rod, the strings are extended as shown in figure. a) How many revolutions per minute must the system make in order for the tension in the upper cord to be 20 kg? b) What is the tension in the lower cord then?

Q: A piano wire with mass 2.60g and length 81.0cm is stretched with a tension of 30.0N . A wave with…

A: Given value--- mass = 2.6 g. length = 81 cm. Tension = 30 N. frequency = 110 Hz. amplitude = 1.4…

Q: A boy throws a steel ball straight up. Consider the motion of the ball only after it has left the…

A: The answer is  3.An almost constant downward force of gravity only.

Q: Problem Statement: You decide you are done with physics class and you run away to join a traveling…

A: a)The above figure represents the physical situation of the given problem,Let v0 is the initial…

Q: 1 1 Two forces F₁ and F₂2 produce the same impulse on two different objects. The magnitude of the…

A: Given that--- F1 = 9 F2 . Time interval of F1 = 7 ms. Impulse of F1 and F2 are same ? We have to…

Q: A concrete highway curve of radius 80.0 m is banked at a 13.0° angle. Part A What is the maximum…

A: given-        mass of the car be m = 1900 kg         radius of the curve be r = 80 m         angle…

Q: What is the length of a wave in nanometers with a frequency of 4.9 x 107 Hz?

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Q: . At what acceleration shall you attain a velocity of 3.0m/s from rest after 5.0 seconds?

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Q: A small block of mass 175 g starts at rest 4.0 m above the ground (point A). The block then slides…

A:

Q: A 1260 kg elevator accelerates upward at 1.20 m/s2 for 16.8 m starting from rest. How much work (in…

A: The give data we have: Mass of the elevator: 1260kg acceleration of the elevator: 1.20m/s2 Height…

Q: Note that the speed of sound in air is 340 m/s and the speed of sound in water is 1500 m/s. An…

A: Given, The speed of sound in air is 340 m/s and the speed of sound in water is 1500 m/s. An…

Q: An F1 race car starts from rest on a race track. By the 100 m mark on the track, it had accelerated…

A: Given Data initial speed of the car u = 0 m/sdistance s = 100acceleration of car a = 55 m/s2let t…

Q: In an INELASTIC collision between two objects OOO the kinetic energy of the system is conserved, but…

A: Inelastic collision: Such a collision between two objects, in which some energy is wasted, is known…

Q: How fast must a 2.7-g ping-pong ball move in order to have the same kinetic energy as a 145 g…

A: Given that,  Mass of ping-pong ball, mp=2.7 g=2.7×10-3 kg Mass of baseball, mb=145 g=145×10-3 kg…

Q: car skids 3 m before stopping from a 33 km/h velocity. How far will the car skid if it is travelling…

A: Given value--- car skids 3 m before stopping from a 33 km/h velocity. We have to find--- How far…

Q: PROBLEM: An F1 race car starts from rest on a race track. By the 100 m mark on the track, it had…

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Q: A flexible shaft consists of a 0.20-in-diameter steel wire encased in a stationary tube that fits…

A:

Q: A car's bumper is designed to withstand a 4.32 km/h (1.2-m/s) collision with an immovable object…

A: Given data, Initial velocity u=1.2 m/s Final velocity v=0 m/s Distance covered S=0.27 m Mass of the…

Q: At amusement parks, there is a popular ride where the floor of a rotating cylindrical room falls…

A: Here normal reaction provide the centripetal force .

Q: Now, the target moved further away and the sniper must compensate, primarily adjusting the angle of…

A: Height = h = 150 m initial velocity = V0= 1800 Km/h = 500 m/s angle = 21 degrees

Q: Consult Concept Simulation 2.1 before starting this problem. The Kentucky Derby is held at the…

A: distance (d) = four quarter miles = 1 mile initial velocity (v) = 16.58 msacceleration (a) = 0.0105…

Q: Do a graph based on the table. X-axis (Length of the Pendulum) and Y-axis (square of the period)…

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Q: A hollow ball of mass m = 2.0 kg and radius r rolls without slipping along a loop-the-loop track,…

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Q: 2- cathode-ray tube accelerates an electron from rest across a potential difference of 5 KV: a. What…

A:

Q: The power radiated by the sun is 3.9 x 1026 W. The earth orbits the sun in a nearly circular orbit…

A: Determine the intensity radiated by the Sun. I=PAI=P4πR2I=3.9×1026 W4π(1.5×1011 m)2I=1379.34 W/m2

Q: Find the acceleration of a car after 5.0 seconds if it has a velocity of 10 m/s after traveling a…

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Q: 1. Knight P10.7 What height does a frictionless playground slide need so that a 35 kg child reaches…

A: mass of child(m)=35 kg let h be the height g be acceleration due to gravity=9.8 m/s2 v be speed at…

Q: A ship leaves the port going directly East for 1km, then turns and sails to  a 200° bearing for…

A:

Q: A particle has a mass of 1.88E-28 kg and it travels at a speed of 0.971c, where c is the speed of…

A:

Q: 1. For the vectors shown in the figure, find a) A. B b) B.C c) A. C Use either method. Be careful…

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Q: Three carts A, B and C in Figure I shown below are situated on a frictionless horizontal surface and…

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Q: Use Kirchhoff's rules to calculate currents I1, I2, and I3, and compare them with the experimental…

A: The circuit diagram is shown below.

Q: Point A in (Figure 1) is 4.5 mm from the wire. Assume that the wire is very long and that all other…

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Q: Problem 2 Clay Collision Three pieces of clay have the velocities and masses shown where 0 = 30°. If…

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Q: A concrete highway curve of radius 80.0 m is banked at a 13.0 angle. ▼ Part A What is the maximum…

A:

Q: An air bubble frozen in ice is extracted from many meters below the surface in the arctic. The…

A: Activity (A) = 0.8 % of the original activity

Q: A box of mass 5 kg is placed 1.5 m at the end of a plank pivoted in the middle. Another box of mass…

A:

Q: A student investigating the photoelectric effect attempts to measure the kinetic energy of electrons…

A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Q: Find r(t). u(t). r(t) = (3-6)i +³ +2 2k . u(t)= t²i6j+t³k r(t) u(t)= = 2

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Q: Neglecting air resistance, what is the speed of an object (in m/s) 1.7 seconds after being dropped…

A: Our question is to find the speed of an object which is falling freely from a height after 1.7 s

Q: 5. Find the least expensive route from a to g in the graph. a 42 40 20 bo g 45 35 75 f b 85 55 60

A: Answer: The least expensive route from a to g in the diagram is : a-b-e-g cost of this path =…

Q: Suppose you wanted to store 6 µC of charge in a capacitor across a voltage of 120 V. What…

A: Given data:  Charge (Q) = 6 μC Voltage (V) = 120 V Required: The capacitance (C)

Q: A blacksmith immersed a piece of steel at 600 Fahrenheit into a large bucket of water with a…

A: Given Initial temperature of piece of steel T0=600 Fahrenheit temperature of water =65 Fahrenheit…

Q: The earth's magnetic field, with a magnetic dipole moment of 8.0 x 1022 A m², is generated by…

A: Given data: The magnetic dipole moment of the earth is μe=8.0×1022 Am2 The diameter of the current,…

Q: A 3 kg pendulum bob on a string 5 m long is released with a velocity of 3 m/s when the support…

A: Given data: Mass (m) = 3 kg Length (L) = 5 m Initial velocity (u) = 3 m/s Angle (θ) = 25°, with the…

Q: 4. A daring swimmer drives off a cliff with a running horizontal leap, as shown in the figure. What…

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Q: What is the final velocity of a ball (i.e. a spherical shell) that rolls without slipping down a 4.3…

A: given height of the hill h= 4.3 m initially the ball is at rest i.e. initial speed=0  so energy of…

Q: Dr. Sheldon Cooper and Penny are on the way to the Comic Book Store to buy a gift for Leonard. Penny…

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Q: A particle is propagating at relativistic speed. It is observed to have an energy of 3.1 GeV and a…

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Q: A spacecraft has a length of 100 m when parked on Earth. It is now moving toward a tunnel with a…

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Q: (Figure 1), each capacitor has C = 4.60 μF and Vab = 35.0 V. ure a C₁ C₂ C₂ =1 C4 d 1 of 1 Part A…

A:

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!