# Search results

1. ### Calculus Shoebox (help create a creative yet simple problem)

Homework Statement Make up a RELATED RATE word problem and illustrate it in a shoebox, using small toys, cutouts, pipe cleaner figures, play dough, etc. Don’t make your problem too hard, but it must involve calculus. 1. Clearly written statement of the problem (separate from box as...

[SOLVED] Ferris Wheel Problem!!!!! PLEASE HELP! Homework Statement The Ferris Wheel takes 29 seconds to make one revolution. The diameter of this Ferris Wheel is forty feet. The distance from the ground to the top of the Ferris Wheel is forty-five feet. (That means that the distance...
3. ### Magnetic Field Problem! HELP NEEDED

[SOLVED] Magnetic Field Problem! HELP NEEDED!!!!!!! 1. Homework Statement A proton of mass mp and charge e is in a box that contains an electric field E, and the box is located in Earth's magnetic field B. The proton moves with an initial velocity vertically upward from the surface of...

Urgent Magnetic Field Problem!!! Urgent!!!!!!!!!!please Help! 1. Homework Statement a) What is the direction of the net magnetic filed at P due to the currents? b) Determine the magnitude of the net magnetic field at P due to the currents. A charged particle at point P that is...

[SOLVED] Capacitors VERY QUICK EASY QUESTION! PLEASE HELP! Homework Statement A parallel-plate capacitor has circular plates of 8.80 cm radius and 1.50 mm separation. (a) Calculate the capacitance.
6. ### Circuits VERY EASY BUT HELP NEEDED

[SOLVED] Circuits!! VERY EASY BUT HELP NEEDED!!!! Homework Statement (a) Find the current in the circuit when the tank is empty. Well for part a) i did 12V=115*I and for I i got 9.583 Amps and that came wrong

[SOLVED] electrostatics, ONE TEENSY little problemo! please HELPPPPP thanks!!!! Homework Statement Two charges of q1 = 1.3 µC and q2 = -2.6 µC are d = 0.60 m apart at two vertices of an equilateral triangle as in Figure P16.56. (d) What is the work required to move a 3.2 µC charge...

[SOLVED] ELECtric Field Problem PLEASE HELP !!!!!!!!!!!!!!!!!!!!!!! HELP!! Homework Statement Two particles are fixed to an x axis: particle 1 of charge q1 = +2.8*10-8 C at x = 20 cm and particle 2 of charge q2 = -4.50q1 at x = 70 cm. At what coordinate on the axis is the net electric field...
9. ### Electric Field Help SIMPLE problem

Electric Field Help!! SIMPLE problem!! Homework Statement Two particles are fixed to an x axis: particle 1 of charge -3.50*10-7 C at x = 6.00 cm, and particle 2 of charge +3.50*10-7 C at x = 29.0 cm. Midway between the particles, what is their net electric field? Homework Equations...
10. ### Tension in Strings HELP thanks!-very simple.

[SOLVED] Tension in Strings HELP thanks!--very simple. Homework Statement A 16 kg object hangs in equilibrium from a string with a total length of L=5m and a linear mass density of u= 0.0010 kg/m. The string is wrapped around two light, frictionless pulleys that are separated by a distance...
11. ### Diffraction hw help

[SOLVED] Diffraction hw help Homework Statement calculate d for a diffraction grating with 600 lines/mm. Homework Equations mwavelength / d = x/ L The Attempt at a Solution well i really don't know what to solve for because i thought the diffraction grating is d.
12. ### Lens Problem, Help from Anyone! Thank you, I appreciate it very much!

[SOLVED] Lens Problem, Help from Anyone! Thank you, I appreciate it very much! Homework Statement An object is placed 30 mm in front of a lens. An image of the object is located 90 mm behind the lens. a) What is the focal lenght of the lens? b) On an axis (the x-axis) draw the lens at...
13. ### Another Index of Refraction Problem ! HELP! PLEASE

[SOLVED] Another Index of Refraction Problem!!!!!!!!!!! HELP! PLEASE Homework Statement When the rectangular metal tank in Figure 33-49 is filled to the top with an unknown liquid, observer O, with eyes level with the top of the tank, can just see the corner E. A ray that refracts toward O...
14. ### Light is Reflecting-EASYYYY PROBLEM! but help needed.

[SOLVED] Light is Reflecting-EASYYYY PROBLEM! but help needed. Homework Statement Figure 33-47 shows light reflecting from two perpendicular reflecting surfaces A and B. Find the angle between the incoming ray i and the outgoing ray r'. The figure is attached to this thread! Homework...
15. ### Refraction Problem- very easy but need help

[SOLVED] Refraction Problem- very easy but need help . . . .
16. ### Waves ~ HELP one Simple problem! Thanks!

[SOLVED] Waves ~~~~~ HELP one Simple problem! Thanks! 1. Homework Statement .
17. ### Frictional Force Block Problem-VERY EASY But need HELP!

[SOLVED] Frictional Force Block Problem---VERY EASY But need HELP! Homework Statement
18. ### Accelerated Motion Problem-easy but I NEED HELP on it

[SOLVED] Accelerated Motion Problem--easy but I NEED HELP on it!!! Is NOT an example of accelerated motion? e. Horizontal component of projectile motion
19. ### Acceleration of Guns firing on Moon and Earth Problem-HELP

[SOLVED] Acceleration of Guns firing on Moon and Earth Problem--HELP!! sorry accidentally created this
20. ### Universal Gravitation Ice Rink Problem!

[SOLVED] Universal Gravitation Ice Rink Problem! :) never mind
21. ### Universal Gravation Problem -experts needed haha

[SOLVED] Universal Gravation Problem --experts needed haha Never Mind.
22. ### LOOP problem with DIAGRAM!

[SOLVED] LOOP problem with DIAGRAM! A mass (m) slides without friction down a ramp and around a loop. What is the minimum height that the block can be released from to make it around the loop? i have ATTACHED the picture of the diagram!! in the picture the R is the radius, the m is the...
23. ### Impulse and depth

[SOLVED] Impulse and depth********!!!!!!!!!!!!!!!!!!!!!!!! Homework Statement In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, suffering only minor injuries. Assume that his speed at impact was 58 m/s (terminal...
24. ### Find the magnitudes of the impulse on him from the water

[SOLVED] IMPULSE, i need HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Homework Statement Until he was in his seventies, Henri LaMothe excited audiences by belly-flopping from a height of 11 m into 30 cm. of water (Figure 9-49). Assuming that he stops just as he reaches the bottom of the water and...
25. ### Energy Question. I REALLY NEED HELP

[SOLVED] Energy Question. I REALLY NEED HELP Homework Statement A block of 1 kg is sent sliding down a frictionless curved ramp. The block reaches the horizontal and hits a rough surface where a frictionless force of 2N acts for 5 meters. The block continues on, going up the frictionless...
26. ### Inelastic Question HELP

[SOLVED] Inelastic Question HELP!!!!!!!!!!!!!!!!!! Homework Statement A 0.20 kilogram mass is sliding on a horizontal, frictionless air track with a speed of 3.0 meters per second when it instantaneously hits and sticks to a 1.3 kilogram mass initially at rest on the track. The 1.3 kilogram...
27. ### Conservation of EnErGy Problem help please

[SOLVED] Conservation of EnErGy Problem help please :( Homework Statement If a Saturn V rocket with an Apollo spacecraft attached has a combined mass of 2.3 105 kg and reached a speed of 11.2 km/s, how much kinetic energy would it then have? Homework Equations k= m(vsquared)/ 2...