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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).
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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.
Will a steel ball float in mercury if it's heated?
No, a steel ball will not float in mercury, even if it is heated. Mercury is much denser than steel, so the steel ball will sink in mercury regardless of its temperature.
What is initial charge on the pith ball?
The initial charge on a pith ball is typically neutral, meaning it does not have a net positive or negative charge. It can be charged by bringing a charged object near it, inducing a separation of charges within the pith ball.
What determines the steel ball ratio of a ball mill?
The steel ball ratio in a ball mill is determined by the material being milled and the grinding conditions. Generally, a higher steel ball ratio results in more effective grinding and finer particles. However, the optimal steel ball ratio may vary depending on the specific milling process and desired outcome.
Is it possible to have positive instantaneous tangential velocity and negative instantaneous tangential acceleration?
Yes, it is possible to have positive instantaneous tangential velocity and negative instantaneous tangential acceleration. This occurs when an object is moving in the positive direction but slowing down due to a decrease in its speed.
Will a ball with a positive charge attract or repel a ball with negative charge?
A ball with a positive charge will attract a ball with a negative charge because opposite charges attract each other according to the laws of electrostatics.
Who describe the atom as negative charges scattered though a ball of positive charges?
protons
If a ball rolls down an incline from left to right the slope of that incline is what?
Negative positive (apex)
Who descibed the atoms as negative charges scattered through a ball of positive?
J . J Thomson
Will a negative and a positive ball attract when repelled by a metal rod?
Yes, a negatively charged object (negative ball) and a positively charged object (positive ball) will attract each other, regardless of the presence of a metal rod. The metal rod may influence the distribution of charges or provide a pathway for charge movement, but the fundamental attraction between opposite charges remains. If the rod is causing the two balls to be repelled from it, the attraction between the negative and positive charges will still persist.
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 described the Atom As negative charges scattered through a ball of positive Charles?
JJ Thomson, who discovered the electron.
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.
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
Will a steel ball float in mercury if it's heated?
No, a steel ball will not float in mercury, even if it is heated. Mercury is much denser than steel, so the steel ball will sink in mercury regardless of its temperature.
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.
What is initial charge on the pith ball?
The initial charge on a pith ball is typically neutral, meaning it does not have a net positive or negative charge. It can be charged by bringing a charged object near it, inducing a separation of charges within the pith ball.
