There are three forces acting on an object: 4N to the left, 5N to the right and 3N to the left. What is the net force acting on the object?
4N to the left = -4N[X]
5N to the right = 5N[X]
3N to the left = -3N[N]
*[X] represents the direction of the force, left is negative, right is positive.
Net Force = all the forces added together
= - 4N[X] + 5N[X] - 3N[N]
= -2N[X]
The net force is 2N to the left.
Mg(s) + 2 H2O(l) H2(g) + Mg(OH)2(aq) <<<this is my balanced chemical equation
I just don’t know what the net ionic equation is. Someone please help me!
Mg(s) + 2H2O = H2 + Mg(OH)2
Net ionic equation is 4H+ + 2O- = Mg++ + 2OH-
I have spent about two weeks now trying to gather options on how I can start a dating site because I have a great idea for a particular niche. Does ASP.Net dating software require programming knowledge or can I create a site from this on my own? I wouldn’t mind learning how to install it or certain things on programming, but if it’s something that requires a developer, then obviously I won’t buy it. Any ideas?
"Asp.Net dating software" - what software you are talking about ? If you found some ready to use dating web app. that you can buy - then , no you don’t need to know asp.net . you still need to install it on the server, set all permission, install database etc.
I need to get a new net for my Lifetime basketball goal, but I don’t know what the difference between a 50-gram net and a 120-gram net. What is the difference between these two nets?
about 70 grams
What is the relationship between net energy efficiency and the second law of thermodynamics? How are related?
They aren’t related. "Net energy efficiency" is just a concept we use to understand how "good" a system is at converting "what we pay for" into "what we want".
The second law of thermodynamics is the law of forbidden entropy destruction. Entropy OF THE UNIVERSE can either increase due to a process (an irreversible process) OR remain conserved due to a process (a reversible process). BUT, the net entropy of the universe cannot be destroyed, that would be an impossible process.
Okay, I’ve got another one.
What is the difference between "attacking the net" and "blocking the serve"?
I’ve read two different versions. I’ve read that any kind of contact with the ball above the net on a serve (and in front of the 10 foot line) is an illegal block.
But then I’ve also read that it’s not attacking the net if you don’t complete the attack, i.e. you have hit the ball while above the net, but it didn’t go over the net and your teammates play it.
I’m confused!
If you are talking about attacking the serve or blocking the serve, there is a little difference.
Blocking the serve is illegal. Period. Never legal.
Attacking the serve may or may not be illegal and depending on the rules. In the high school rules, NFSHSA, attacking the serve is illegal if the ball is completely above the height of the net. In USAV club, NCAA college, or FIVB international rules, you may attack the serve if the ball is behind the 3 meter line. Or you may attack the ball if part of the ball is below the height of the net, no matter where it is. It is illegal to attack the serve if the ball is completely above the height of the net AND the ball is in front of the 3 meter line.
The difference between a block and an attack are the same when considering any shot. A block is an attempt to stop the ball from coming over to your side of the net. Attacking the ball is taking a more offensive type play. Spiking, tipping or just sending the ball over the net are considered attack. There are some offensive type blocks and some defensive type attacks that the referee has to decide whether or not it is a block or an attack.
I hear a lot of people claiming that taxes were raised more times during the Reagan administration than they were reduced. I would think that it would be more important what the net result was.
Spot,
I was lower middle class during the 70s and I saw more improvement in my circumstances in th 80s than any other time in my life.
Those are just more liberal lies.
Reagan got more and more popular all through his Presidency- a very rare feat!
He couldn’t do that unless he did the right things.
I know the formula of net productivity, and I know primary production is the production carried out by autotrophs, but I can’t find the information for the average net primary productivity of a pond.
What kind of work are you doing??? sounds tough, go you! anyway thanks for answering my question
Mass of the crate is 50kg and the sliding friction is 100 N
What is the (a) net force and (b) the friction?
How did you do it?
You only can find the coefficient of friction
μ = F/mg = 100/(50×9.8) = 0.20
Net force can be found if net acceleration is known, and viceversa, by equation
F = ma
but if neither is known calculation is impossible.
Consider two point charges located on the x axis: one charge, q1= -17.0 , is located at x1= -1.685 ; the second charge, x2= 34.5 , is at the origin (x=0.000). What is the net force exerted by these two charges on a third charge q3= 52.0 placed between q1 and q2 at x3 = -1.245 ?
You didn’t include the units so I’m assuming distances are in meters and charges are μC
Now q1 and q2 both create a force to the left on q3
So F = k*q1*q3/r13^2 + k*q2*q3/r23^2
= 9.0×10^9*(17×10^-6*52×10^-6/(1.685 - 1.245)^2 + 34.5×10^-6*52×10^-6/1.245^2) = 51.5N to the left