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Does a magnetized steel ball have both positive an negative ends?
Wiki User
∙ 14y ago
Yes, all spherical magnets have both a positive and negative pole, just as the Earth - - a magnetic, spherically-shaped, planet - - has two poles. Refer to the "Cool Magnet Man" link, below, for extensive information (click the "Home" button at the top right of that page for that website's table of contents).
Wiki User
∙ 14y ago
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What is the difference between positive and negative momentum?
The difference between positive and negative momentum is the direction that the object is going. Left and down are negative, right and up are positive. For example: if a ball is rolling to the left, it has a negative momentum.
Is it possible to have positive instantaneous tangential velocity and negative instantaneous tangential acceleration?
Yes. Imagine a ball on a rigid pole being swung around, and slowing down. It's tangential velocity is positive but it's tangential acceleration is negative
Will a ball of steel bounce higher then a ball of glass?
yes
Will a hollow steel ball crush under water?
No. A hollow steel ball will not crush underwater. One reason this is true is because the steel ball cant go under the water in the first place because it hallow.
What are petanque ball made from?
Steel.
Will a ball with a positive charge attract or repel a ball with negative charge?
attract
What is the difference between positive and negative momentum?
The difference between positive and negative momentum is the direction that the object is going. Left and down are negative, right and up are positive. For example: if a ball is rolling to the left, it has a negative momentum.
Who describe the atom as negative charges scattered though a ball of positive charges?
protons
Who descibed the atoms as negative charges scattered through a ball of positive?
J . J Thomson
If a ball rolls down an incline from left to right the slope of that incline is what?
Negative positive (apex)
What is a steel ball?
A steel ball is a ball, or sphere, made of steel. An example would be a ball bearing, and the whole world runs on bearings, many of which are of the ball bearing variety.
Who described the Atom As negative charges scattered through a ball of positive Charles?
JJ Thomson, who discovered the electron.
How is negative charge distributed in the atom according to Thomson's model?
Just as seeds in a watermelon electrons are embedded in a positive ball
What do you mean by positive and negative work?
Positive work is input energy, w= -f.d - |fd|cos(fd) , when this is positive energy is put into the system, in this case the force is in the opposite direction of the displacement. Negative work is output energy properly called exergy, w = -f.d, in this case the force is in the direction of the displacement, for example, dropping a ball is exergy, the displacement is in the direction of the force of gravity. This is exergy, work is taken out of the system as opposed to lifting the ball which required putting work into the system. Maxwell had a problem with quaternions because physicists defined positive work as dropping the ball, and the rules of quaternions said dropping the ball is a negative sign and thus exergy, work out, not work in. Around the 1900 this was a major conflict and the physicist won and decided to change the sign on vectors squared , I2 = -1 to +1, so dropping the ball would be positive energy. This is incorrect physics and incorrect mathematics. The sign of the scalar work is negative for work out and positive for work in. This is seen in opposites attract, you get work out and the sign is negative. For like charges the sign is positive and you have to put work in.
A bowling ball with a negative initial velocity slows down as it rolls down the lane toward the pins Is the bowling ball's acceleration positive or negative as it rolls toward the pins?
In these situations, you usually define one direction as being positive and the other as negative. In this problem, the question does this for us: it clearly tells us that when the ball is moving down the lane, its velocity is negative. "Down the lane" is the negative direction.Average acceleration is give bya_ave = Δv/Δtwhere Δv is a change in velocity and Δt is elapsed time.Δv = v_final - v_initialIn this problem, the ball "slowed down," but did not change direction. This means that the NUMBER associated with "v" got smaller (5 ... 4 ... 3 ...) but the SIGN (-) did not change.I hope it makes sense, then, that "v_final" was a smaller (slower) number with a negative sign (moving down the lane) while "v_initial" was a larger (faster) number with a negative sign (moving down the lane).The subtraction of a large negative number from a small one (like, for instance, -4 - [-10]) is a POSITIVE number whose value is given by the difference (+6).So Δv is positive, and Δt is ALWAYS positive (no matter what).Therefore a_ave, the quotient of two positive numbers, will be positive.
Is it possible to have positive instantaneous tangential velocity and negative instantaneous tangential acceleration?
Yes. Imagine a ball on a rigid pole being swung around, and slowing down. It's tangential velocity is positive but it's tangential acceleration is negative
What is a Steele?
A steel ball is a ball, or sphere, made of steel. An example would be a ball bearing, and the whole world runs on bearings, many of which are of the ball bearing variety.
