Mechanics

This question made me lol, so I have to answer it.

The bug is travelling in an assumedly perfect circle (the record), so the acceleration is directed toward the center of the record, as is the centripetal force

ACTUALLY, stairs CAN'T go left to right. Unless you're watching Harry Potter, and feel that you live in Hogwarts. -3-

1 foot-pound is equivalent to: * 1.3558179483314004 newton meter (exactly) found at www.wikipedia.org

N o! the upthrust can not act at a distance because it acts on the centre of gravity of the object submerged in water in the opposite direction of weight.

friction is a eorce of contact between two surfaces which opposes motion of objects over one another. In rolling friction the area in contact between two objects is comparatively less then that in case of sliding as in rolling, one object just roll over each other hence area of contact is less so force of rolling friction is less than sliding friction.

it could be said that since potential energy (mgh) is lost at the exact rate kinetic energy (ke) is gained, that energy is translated into another form

since force applied (gravity) over time then impulse applied and increase of momentum

For circular motion to occur, there must be a centripetal force( a force that is always directed towards the centre of the circle).

The centripetal force is defined as F = mv2/r

Where F is the centripetal force, m is the mass of the orbiting body, v is the velocity of the body, and r is the distance to the centre of the circle.

If you whirl a conker above your head, the centripetal force is provided by the tension of the string. For a planet orbiting the sun, the centripetal force is provided by gravity.

Rain droplets can refract light. Different colours refract in different amounts so a spectrum is produced.

yes

The decision to take it to a body shop for an oil change.

modulation

1. force that moves a car forward is the friction force between the tires and the road (ignoring what is going on mechanically in the car)

2. if the car is travelling at constant velocity, net force is zero - forces pushing car forward are equal to forces pushing car back

stationary transverse waves

It is usually the car's engine doing work.

When the axial loads(Tensile/Compressive) will rise above the strength of specially designed socket , spigot and cotter. The failure may be of anyone component or together.

The materials that, in general, change sliding friction to fluid friction are called lubricants. This class of materials includes oil, grease and the like.

No, it's a 2nd class.

Light is almost a million times faster.

v = fλ

V/f = λ (wavelength)

V = 340ms-1

340/f = λ

In short you need to know the frequency of the particular sound wave to work out it's wavelength. once you know that you plug it into the above equation and you will get the wavelength of the wave.

They are already free in the conduction band of metals, they are just not moving until forced to either by a battery or the magnetic field in a turning generator/alternator.

As an inclined plane gets shorter, the angle gets steeper and the effort becomes greater.

A horizontal line parallel to speed axis indicates that the body is moving at a constant speed i.e. it's speed doesn't change with passage of time. The body may have zero or non zero acceleration, but it will always have non zero velocity.

But, that doesn't mean that body's velocity is constant and it is not accelerated. For example in uniform circular motion the speed of body remains constant but velocity changes due to change in the direction of motion. Also there is acceleration towards center of circle called centripetal acceleration which changes the direction of velocity.

For this acceleration a force should act towards the center called centripetal force.

If speed is constant then the force, if present, must act in direction perpendicular to the immediate direction of motion i.e. perpendicular to the tangent drawn at any point on the path of motion.

If the speed is constant the frictional force must be equal to the propelling force (which is gravity in this case) as any imbalance of forces creates an acceleration.

If the 60N is in the same direction as the movement, then the frictional force is also 60N. If 60N is the gravitational force, you'll have to use the angle to calculate the propelling force that acts in the direction of movement. Again, the frictional force will be exactly the same as the propelling force in the direction of movement (only in magnitude, though - the direction of the frictional force (the vector) will be in the opposite direction).

If the same force is constantly applied to two movable objects, the more massive one will accelerate. Also, the more massive one will accelerate more slowly than the less massive one.