pendulum A oscillating continuously comes to rest after some time. Now make both pendulums A and B to oscillate simultaneously. What will happen? a) A comes to rest earlier than B b) B comes to rest earlier than A c) A and B comes to rest simultaneously d) A and B oscillate forever

Q: A ship of mass 3×107kg initially at rest is pulled by a force of 5×104N through a distance of 3m. As...

A: a = F/m = (5×104)/(3×107 ) Speed attained by the ship, v = √2as = 0.1m/s.

Q: A child sits on a merry‑go‑round that has a diameter of 6.00 m. The child uses her legs to push the ...

A: This is a problem from circular motion. To solve this problem we will use the modified kinematical e...

Q: A heavenly body revolves around a massive star in a highly elliptical orbit. Ignoring mass loss of t...

A: D

Q: Eighteen-gauge wire has a diameter of 1.024 mm. Calculate the resistance of 17 m of 18 gauge lead wi...

A:

Q: A toaster is rated at 620 W when connected to a 140 V source. What current does the toaster carry, a...

A: Here, Power = 620W Voltage = 140 V Now for the power  P= VI I = P/ V I= 620/ 140 = 4.43 A Now for th...

Q: A horizontal platform is rotating with uniform angular velocity ω around the vertical axis passing t...

A: This is a problem related to circular motion and rotational motion. In this problem, we will apply t...

Q: Kepler’s second law is based on ___________ a) Newton’s first law b) Newton’s second law c) Special ...

A: D

Q: The escape velocity in earth is 11.2km/s. What will be its value on a planet whose radius is double ...

A: Option b

Q: Could you please answer? Thanks.

A: Given: The mass of the guitar wire is m=0.5 g. The length of the stretched wire is l=30 cm. The tens...

Q: A particle of mass M is moving in a horizontal circle of radius R with uniform speed v. When it move...

A: C

Q: A shortstop is running due east as he throws a baseball to the catcher, who is standing at home plat...

A: Given: The velocity of the baseball relative to the shortstop is 6.00 m/s. The speed of the baseball...

Q: A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is s...

A: Option d

Q: On being displaced, the centre of mass of unstable equilibrium goes ___________ a) Higher b) Neither...

A: D option

Q: Please show formulas. I  need help on part h.

A:

Q: By the method of this article, determine the rectangular and polar radii of gyration of the shaded a...

A: The schematic diagram can be drawn as: From the figure, the area of part (1) can be calculated as: ...

Q: The centre of mass of a body should lie inside the body. a) True b) False

A: B

Q: Clinical thermometer can be sterilized by boiling. a) True b) False

A: Option

Q: A flywheel is suspended by resting the inside of of the rim on a horizontal knife-edge so that the w...

A: Given: The mass of the flywheel is 350 kg. The distance of the knife edge from the axis is 350 mm. I...

Q: A solid weight 6kg in air. If its density is 2000kgm-3, what will be its apparent weight in water?

A: Volume of solid=mass/density=6/2000 m3=Volume of water displaced Mass of water displaced=Volume×Dens...

Q: 8. A car drives to the north, but it slows down. Which direction does its acceleration point? Explai...

A: Explanation: When the car moves, the force is applied by the engine of the car and the car accelerat...

Q: When a massive body collides against a light body at rest ___________ a) The light body starts movin...

A: A

Q: A ball is thrown vertically upwards with a velocity of 20m/s. At what height, will its kinetic energ...

A: Option a

Q: The angular position of a circular disk with a circular diameter of 0.36m varies depending on the ti...

A: Part (a) The angular positions of a point on the circular disc at t1 = 2 s and t2 = 5 s can be calcu...

Q: Which of the following has body centered cubic structure? a) Polonium b) Copper c) Nickel d) Tungste...

A: D 

Q: If the density of the planet is doubled without any change in its radius, how does g change on the p...

A: D

Q: B. A/ How m of work? B/ How mu

A: Heat Engine A heat engine is a device that is used to convert heat energy into mechanical energy.  A...

Q: Which of the following retain their relative positions even when they move under the action of an ex...

A: Option c

Q: Suppose that 7,244.5J is added to a container of water that has a mass of 193.75g.  If the final tem...

A:

Q: If the amount of heat energy received per unit area from the sun is measured on earth, mars and Jupi...

A: C

Q: If a star is moving rapidly towards us, how does the doppler shift affect its spectrum? Is it redshi...

A: Given, A star is moving rapidly towards us, there will be doppler shift in the spectrum.

Q: A gardener pushes a lawn roller through a distance of 20m. If he applies a force of 20kg weight in a...

A: Option b

Q: A hammer is resting on a plane surface. If force P is applied on the hammer along with a line not pa...

A: d option

Q: Two spheres of masses m and M are in air and the gravitational force between them is F. The space ar...

A: F

Q: A ball dropped from a spacecraft is revolving around the earth at a height of 120km. What will happe...

A: C

Q: A moving hammer drives a nail into the wood. It has kinetic energy. a) True b) False

A: Option a

Q: (P2) Suppose two students are memorizing the elements on a list according to the rate of change equa...

A: Given that the rate of learning is, dLdt=0.51-L        (1) Where L represents the fraction of list t...

Q: What is the lattice constant for FCC crystal having atomic radius 1.476 Å?a) 1.476 Åb) 4.1748 Åc) 5....

A: B

Q: Calculate the diameter of a 1.6 cm length of tungsten filament in a small lightbulb if its resistanc...

A:

Q: When a light body collides with a massive body at rest ___________ a) The light body rebounds after ...

A: Option a

Q: 3- Convert the octal number 3276 to its equivalent decimal number 4- Convert the octal number 7542 t...

A: Decimal number system: The decimal number system consists of ten different symbols like 0, 1, 2, 3, ...

Q: A body of mass 2kg is placed on a rough horizontal plane. The coefficient of friction between body a...

A: Option d

Q: A 20cm long capillary tube is dipped in water. The water rises up to 8cm. If the entire arrangement ...

A: 20 cm

Q: The angular momentum of a body is 3.14 is and its rate of revolution is 10 cycles per second. Calcul...

A: D

Q: Consider a tennis ball (58.0 g) that was served to a speed of 200 km/h. During the match, the “Hawk-...

A: Concept used: Wave-particle duality is applicable to microscopic objects. Hence, position and moment...

Q: Statement 1: Linear momentum of a system of particles is zero. Statement 2: Kinetic energy of a syst...

A:

Q: The Sun’s attraction of both earth and moon are external forces acting on the centre of mass of the ...

A: True

Q: Two identical balls A and B collide head on elastically. If velocities of A and B, before the collis...

A: D option

Q: A person with a spring balance with a body hanging from it goes up in an aeroplane, then the reading...

A: Option b

Q: Help

A:

Q: An unknown hot metal at 147.87°C with a mass of 46.89g was mixed with 38.11g of water at an initial ...

A: