Weight mg

Q: Why are all the tides greatest at the time of a full Moon or new Moon?

A: In the time of full Moon or new Moon, the Earth, Sun and Moon are aligned in one line. As a result, ...

Q: How does Earth's curvature relate to the speed needed for a projectile to orbit Earth?

A: An object will fall about five meters in the first second of the free fall.

Q: What are the essential characterstic of a semiconductor?

A: Semiconductor is a material which has it conductivity between an insulator and a conductor, which is...

Q: (a) When a 9.00-V battery is connected to the plates of a capacitor, it stores a charge of 27.0 μC. ...

A: (a) The equation for the capacitance is Substituting the values gives Therefore, the capacitance o...

Q: What is the magnitude of the gravitational field at Earth's center?

A:

Q: A man can do a certain task in 21 hours, another man can do the task in 28 hours and a boy can do th...

A: The work done by all three in one hour is found as,

Q: Define conduction band.

A: A conduction band is a delocalized band of energy levels in a crystalline solid that is partially fi...

Q: A jet pilot takes his aircraft in a vertical loop , if the jet is moving at a speed of 1140 km/m , a...

A:

Q: Discuss which requires more fuel: a rocket going from Earth to the Moon or rocket returning from Moo...

A: A rocket going from the Earth to the Moon would require more fuel. Since the Earth has more mass tha...

Q: (a) You are driving down the highway in your car when a police car sounding its siren overtakes you ...

A:

Q: Do tides occur in the molten interior of Earth for the same reason the tides occur in the oceans?

A: Tides occur in an ocean due to the differences in gravitational force exerted by the Moon on Earth.

Q: Please answer all parts of the attached question with ample explanation.

A: (a) Consider the mass 2M is moving with speed v0 towards the mass M and they collide and sticks toge...

Q: A proton and an alpha particle (charge = 2 e , mass = 6.64 × 10−27 kg) are initially at rest, separa...

A: (a) The formula for the electric potential energy is: Using the formula of the potential energy, th...

Q: The force required to slowly stretch a spring varies from 0 n to 296 N as the spring is extended by ...

A:

Q: A convex mirror has a focal length of magnitude f. An object is placed in front of this mirror at a ...

A: The formula for the mirror is: The object is at its radius of curvature. Therefore,

Q: A tiny sphere of mass 8.00 μg and charge −2.80 nC is initially at a distance of 1.60 mm from a fixed...

A: Using conservation of energy,

Q: a ski lift operates by driving a wire rope, from which chairs are suspended, around a bullwheel. If ...

A: Given, Diameter =

Q: What is an oscillator?

A:

Q: AGARWAL-PHY-166 muhammad Part A At what rate must a cylindrical spaceship rotate if occupants are t...

A:

Q: Two ice skaters, Daniel (mass 65.0 kg ) and Rebecca (mass 45.0 kg ), are practicing. Daniel stops to...

A:

Q: What causes dust particles and tiny grains of soot to move with Brownian motion?

A: Answer:- Find what causes dust particles and tiny grains to move with Brownian motion. Now, Brownian...

Q: Under what conditions could a fast moving car remain on a banked track covered with slippery ice?

A:

Q: A track is made of a piece of channel iron bent as shown. A ball released at the left end of the tra...

A: Point C is at the lowest position on the curve and as we know that the kinetic energy is more at tho...

Q: What happens to the density of water when it freezes to become ice?

A: Mass per unit volume is the density of a material. We need to think in terms of the change in volume...

Q: We have seen that an electric field must exist inside a conductor that carries a current. How is tha...

A: In electrostatics, charges are stationary. Since the electric potential is same at very point of the...

Q: What is a mixture? Give three examples?

A: The mixtures are formed by mixing the two or more substances with each other without combining chemi...

Q: What is the gain in speed per second for a freely falling object?

A: The gain in the speed of a freely falling object can be measured by calculating the change in the sp...

Q: "How can a projectile "" fall around the Earth""?"

A:

Q: Explain the process of electron-holes recombination.

A: In the semiconductor, when a temperature of valance band increase then some electrons get excited st...

Q: How many types of atoms can you expect to find in a pure sample of any element?

A: Only one type of of atom we can expect to find in a pure sample of any element.

Q: Two small identical conducting spheres are placed with their centers 0.30 m apart. One is given a ch...

A:

Q: If you stand in front of a convex mirror, at the same distance from it as its radius of curvature, y...

A: The formula for the mirror is: The object is at its radius of curvature. Therefore,

Q: Two very long parallel wires carry currents in the positive x direction. One wire (current = 15 A) i...

A: Where, B = magnetic field I = current flowing in wire r = radius   The current flowing through wire ...

Q: What is the direction of the coriolis force in northern and southern hemispheres?

A: The Coriolis force is called compound centrifugal force, deflecting force. An apparent force on movi...

Q: 1-kg of propane that is initially at 30∘∘C and 10 MPa occupies a spring loaded piston cylinder devic...

A:

Q: What is the average speed in kilometers per hour for a horse that gallops a distance of 15 km in a t...

A: Consider the hoarse travels the distance s in time t.

Q: 3) A ring of radius 15 cm is injected with an amount of charge of 3.5 x 10-12C, 17 rad/s. Find the p...

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!