Recent content by PremedBeauty

Total Frustration!Radioactive Decay!Need Fast Help! Hello, I have the link to the exercise: http://www.sciencecourseware.org/VirtualDating/files/RC_6.php" Here are my answers: 1. 1200 2. 2100 3.3800 4.14500 5.1125 6. 2050 7. ? I would think (7) would be 3775, but it's not...

-Look up or derive the frequencies of the standing waves of a length of wire, L, clamped at the ends and under tension. -What are the similarities and differences between a vibrating string and a resonating pipe? -Does the diameter of the wire matter? -Does the diameter of the pipe matter...

The L-shaped tank shown in Figure 14-33 is filled with water and is open at the top. (a) If d = 5.0 m, what is the force on face A due to the water? N (up) (b) What is the force on face B due to the water? N (right) The Force of water on the face A...

Hello, I'm sorry, I'm still not really following. I still have to find the momentum of block B and state is the kinetic, the speeed of block 3 greater than, less than, or same as initial.

How do I know which numbers are before and after? Can you show me some how?

A stationary arrangement of two crayon boxes and three cords. Box A has a mass of 11.0kg and is on a ramp at angle θ=30.0 degrees; box B has a mass of 7.00 kg and hangs on a cord. The cord connected to Box A is parallel to the ramp which is frictionless (a) What is the tension in the upper cord...

Oh, How would you do it if it were elastic?

block 1 of mass m1 slides along an x-axis on a frictionless floor with speed of v1i=4.00 m/s. Then it undergoes a one dimensional elastic collision with stationary block 2 of mass m2=.500m1. Next, block 2 undergoes a one dimensional elastic collision with stationary block 3 of mass m3=.500m2...

One more question: does it matter if you multiply each test grade by .10 (since they are 10% each) then divide by? for exams total:115/400*.2=11.5/40 *100=28.75 labs total: 745/800*.2=149/19.8*100=93.125 homework:99/12*.2=19.8/24=83.5 add them up and divide by .8?

math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades: 9/10,6/10,10/10,10/10,5/10,7/10,7/10,7/10,10/10,10/10,8/10,10/10. Homework is worth 20% test grades are: 35/100...

Thank you. I was wondering if it's correct when I did it.

solution solution: The contact force exerted by the lower sphere on the upper is along that is 45o and the forces exerted by the walla and floors are normal. Equilibrium force on the top sphere leads to Fwall = F cos 45 and F sin 45 = m g According to Newtons third law...

Two identical, uniform, and frictionless spheres, each of mass m, rest in a rigid rectangular container. A line conecting their centers is at 45 degrees to the horizontal. Find the magnitudes of the forces on the spheres from (a) the bottom of the container, (b) the left side of the container...

The diagram is on now, it just takes alittle while to load.

.0100kg particles have been glued to a rod of Length L=6.00cm and negligible mass and can rotate around a perpendicular axis through point O at one end. How much work is required to change the rotational rate (a) from 0-20.0 rad/s, (b) from 20.0 rad/s to 40.0 rad/s, and (c) from 40.0 rad/s to 60...