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Emily Grossman
Questions (17)
Two blocks, each of mass,m, are attached to the ends of a massless rod which pivots as shown in Fig. 8-40. Initially the rod is
0 answers
1,272 views
A car accelerates at a constant rate from 13m/s to 25m/s in 6.0seconds. What was its acceleration? How far did it travel in this
1 answer
673 views
A car accelerates at a constant rate from 13m/s to 25m/s in 6.0seconds. What was its acceleration? How far did it travel in this
0 answers
445 views
I need help classifying these as physical or chemical changes!
1. sodium metal exposed to air turns dark gray. 2. steam in a test
1 answer
1,605 views
I need help classifying these as physical and chemical properties!
1. sodium metal in chlorine gas releases luster. 2. sodium
0 answers
1,411 views
How much work must be done to stop a 1250 kg car traveling at 105 km/h?
9 answers
13,922 views
A 65kg trampoline artist jumps vertically upward from the top of a platform with a speed of 5.0m/s. a) How fast is he going as
4 answers
8,126 views
A ski starts from rest and slides doen a 22 degree incline 75m long. a) if the coefficient of friction is 0.090, what is the
2 answers
4,339 views
How fast (in rpm) must a centrifuge rotate if a particle 9.00cm from the axis of rotation is to experience an acceleration of
1 answer
860 views
If a curve with a radius of 88m is perfectly banked for a car traveling 75km/h, what must be the coefficient of static friction
6 answers
1,821 views
A ball on the end of a string is revolved at a uniform rate in a vertical circle of radius 72.0m, as shown in figure. If it's
3 answers
1,839 views
If a curve with a radius of 88m is perfectly banked for a car traveling 75km/h, what must be the coefficient of static friction
4 answers
5,369 views
Two objects attract each other gravitionally with a force of 2.5 *10^-10 N when they are .25m apart. Their total mass is 4.0kg.
2 answers
577 views
How to solve/work problem?
Two objects attract each other gravitationally with a force of 2.5 * 10^-10 N when they are .25m
2 answers
859 views
How to solve/ work this problem? If a curve with a radius of 88m is perfectly banked for a car traveling 75 km/h, what must be
2 answers
1,129 views
How do you solve this problem?
How fast (in rpm) must a centrifuge rotate if a particle 9.00cm from the axis of rotation is to
3 answers
1,073 views
How do you solve this problem?
A ball on the end of a string is revolved at a uniform rate in a vertical circle radius of 72.0
7 answers
5,253 views
Answers (13)
So then you have to convert it to joules?
I know that, but you like help me figure it out like what to do; please!!
Okay, thanks! I think I figured it out, if not will ask you tomorrow!!
Can you show me step by step with the numbers in there? I am confused..
So is it 2.5*10^-10(m)(4-m)/(.25)^2? Then solve from there?
So do you take 2.5*10^-10N (4.0)/.25^2?
I get what you were doing, but I still need help on how to work this one, like step by step.
How do you work this problem out??
Okay, so for a) get 3.13 and b). get 16.5?
I am confused, can someone show me how to work this problem? I really need help!
Okay, I worked them out, but I am not getting the answer they should be. Like a) i am getting as what should be the answer as b. So, i don't if someone could work them out or tell me maybe what doing wrong. Thanks!
what is the V in this case? That's what throwing me off..
Can you like work the problem out so i can see how it is done?
