A block of wood is so loaded that it just floats in water at room temperature. What change will occur in the state of floatation, if (a) Some salt is added to water, (b) Water is heated?

Q: A projectile is launched horizontally off from a tall building at a sped of 50m/s. After three…

A: Given Projectile is launched in horizontal direction Initial velocity of projectile = ux = 50 m/s…

Q: Calculate and compare its kinetic energy.

A: Given data,  Truck is moving with a,  speed=20 km/hr Identical truck is moving with a speed,   =50…

Q: Consider a series RLC circuit where ?=25.0 Ω,?=15.5 μF and ?=0.0940 H, that is driven at a frequency…

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Q: Two positive charges Q1 and Q2 are separated by a distance r. The charges repel each other with a…

A: Given data:  Two positive changes Q1 and Q2 Distance between charges = r Original force = F The new…

Q: a. [ Calculate the electric force applied by charge q₁ on charge 92. ])i + ( = ( )Ĵ[N] F by 91 on 92…

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Q: In central force motion, the angular momentum is a constant of the motion. What does this tell you…

A: We have been given that Angular momentum is constant in central force motion We need to tell about…

Q: What is the pressure on a swimmer 10 m below the surface of a lake (density of water is 1000 kg/m3)…

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Q: A 330-W heating coil designed to operate from 110 V is made of Nichrome wire 0.720 mm in diameter.…

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Q: If each battery in the figure has an EMF of 1.5V, what voltage would I measure across the two open…

A: CONCEPT The combination of battery in which the positive plate of the first battery is joined to the…

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Q: V Insert each AA battery in a battery pack as shown. Then check the voltage (aka EMF) of each…

A: in this question  we discuss about voltage across  batteries.

Q: A stone is thrown vertically downward with a velocity of 5 m/s from a window 50 meters above ground…

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Q: A block is suspended from a ceiling by a spring stretched 20 cm. When the block moves vertically ,…

A: Given:- y= -0.2 + 0.3sin(wt + θ)  From the above equation it's clear that the amplitude of the shm…

Q: A 1,400-N crate is being pushed across a level floor at a constant speed by a force F of 200 N at an…

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Q: Calculate the wavelength of a wave traveling at 63 m/s at a frequency of 7 Hz.

A: Introduction :   In this question we are provided it value of frequency and wave speed . With these…

Q: a. 15. Cart A (mA = 850 g) has a velocity of 4 m/s [right] and is moving along a frictionless…

A: a) since at the minimum distance kinetic energy of the cars would convert into the potential energy…

Q: pearson login student...... Bb https://learn-us-east-.. An athlete performing a long jump leaves the…

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Q: Density of iron is 1.49 g/ltr. Express it in, a. g/cm³ b. kg/m³

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Q: 9. A tourist being chased by an angry bear is running in a straight line toward his car at a speed…

A: Given : Speed of tourist, u = 4 m/s  Speed of bear, v = 6 m/s  Distance of bear , s = 26 m  Distance…

Q: Part A At one point in the pipe the radius is 0.180 m. What is the speed of the water at this point…

A: In the given question,  Part A: Radius of the pipe is (r) = 0.18m Rate of flow of water (Q) =…

Q: Two protons (p) and two electrons (e) are arranged on a circle of radius r = 4 [cm], with angles 0₁…

A: Draw the schematic diagram of the system of charges.

Q: 7. The three-toed sloth is the slowest-moving land mammal. On the ground, the sloth moves at an…

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Q: Three balls (1, 2, 3) roll on the surface of a table at different speeds (V₁, V₂, V3). If the balls…

A: Given Intial speed of three ball are v1, v2 and v3 Ball fall from the same table at the same time We…

Q: A police car waits in hiding slightly off the highway. A speeding car is spotted by the police car…

A: Formula

Q: Find the focal length of a convex mirror whose radius of curvature is 32 cm. ter

A: Introduction :   In this question we are provided it value of  radius of curvature . With these data…

Q: A negative charge 'q'is located as shown in the figure: P. a.... ] What is the direction of the…

A: a. The Electric field moves in the direction of negative charge i.e it is directed away from the…

Q: A cyclist moves with a speed 2 m/s, then accelerates at 1.2 m/s2 after a distance 25 Then the final…

A: Correct option is (b) 8m/s

Q: A 1-uC charge is located on each of the four corners of a square whose side measures 10 cm. What is…

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Q: A 2.4 0.050 kg yo-yo sto swung in a vertical carcie on the end of ²+0 0.30m long String of the…

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Q: For a particular RLC series circuit, the capacitive reactance is 6.25 92, the inductive reactance is…

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Q: An elevator cable winds on a drum of radius 76.2 cm that is connected to a motor.  a. If the…

A: In the given question, Radius of the drum (r) = 76.2cm = 0.762m We are required to find  (a) Angular…

Q: density of the material of a coin.

A: Given, Describe an experiment to determine the density of the  material of a coin .

Q: 6. An open cart on a level surface is rolling without frictional loss through a vertical downpour of…

A: Option b is correct i.e decrease because of conservation of momentum.

Q: What is the mass of an object moving with respect to us?

A: The mass of an object moving with respect to us is equal to its rest mass if its speed is very less…

Q: A lamp consumes 1400 J of electrical energy in 12 seconds. what is it's Power?

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

Q: A projectile is fired from the ground with an initial angle of 6.5 degrees. Find the initial speed…

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Q: A charge of +2 µC charge is placed at the x = 0. Find the absolute potential at a  point located at…

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Q: Consider a series RLC circuit where R = 345 22 and C = 6.25 µF. However, the inductance L of the…

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Q: The motion of a leftward-moving object is represented by the position - time graph below. Describe…

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Q: 18) A solid uniform disk (1=0.5mr²) is rolling without slipping along a horizontal surface with a…

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Q: An elevator cable winds on a drum of radius 75.6 cm that is connected to a motor.  A) If the…

A: Given data The radius of the drum is given as r = 75.6 cm. The speed of the elevator is given as v…

Q: Consider the two pucks shown in the figure. As they move towards each other, the momentum of each…

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Q: You are a person with incredible arm strength. You throw a ball of mass m = 2 kg horizontally with…

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Q: The displacement of a particle which moves along the x axis is given by x = (-4 + 3t2)e-0.25t,…

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Q: A computer model displays the motion of a particle on a coordinate system in real time. At time t =…

A: Velocity components: In x-direction, v = 0 In y-direction, v = 6.8 m/s Acceleration components: In…

Q: HORIZONTAL MOTION 1. The motion of a particle along the x -axis is described by the equation x =…

A: As per our company guidelines we are supposed to answer only first 3-sub part. Kindly repost other…

Q: A bicycle rim has a diameter of 0.65 mm and a moment of inertia, measured about its center, of 0.15…

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Q: A 89.0 kg person is being pulled away from a burning building as shown in the figure below. 10° (a)…

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Q: Dimension of hall are 20m* 8m* 6m If the density of air is 2.11 kg/m³. Find the mass of air in hall?

A: Given data:  Dimensions of hall = 20 m × 8 m × 6 m Density of air (ρ) = 2.11 kg/m3 Required: The…

Q: A 40 kg boy runs up a staircase to a floor 5 m higher in 7 s. What is his power output?

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