Recent content by Catchingupquickly

Homework Statement Find the total cost for a business that operates the following for one year: - Fifteen 100 W light bulbs for an average of eight hours a day - Two 15 Ohm coffee makers connected to a 120 V power supply for two hours a day each The rate is 6.4 ¢/kWh Homework Equations ##...

Homework Statement A cantaloupe with a mass of 0.45 kg falls out of a tree house that is 5.4 meters above the ground. It hits a tree branch at a speed of 6.3 m/s. How high is the tree branch from the ground? Homework Equations ## \Delta h = \frac {v_i^2 - v_f^2} {2g} ## The Attempt at...

Extremely helpful. Thank you

Actually a follow up question to this adds friction. The puck is hit with a force of 15.3 N and the friction slowing it down is 0.75 N. Same time (3.0 s) same velocity (45 m/s) So a = f/m then plug that into the second formula mentioned above?

Thank you both very much. Very helpful.

Homework Statement An ice hockey puck leaves a hockey stick with a velocity of 45 m/s, how far will it travel in 3.0 seconds? Homework Equations D = v/t or ## \Delta \vec d= \frac 1 2 \vec a \Delta t^2## with ## \vec a = v_2 / \Delta t## The Attempt at a Solution [/B] D = v/t = 45...

Cleaning it up further: d) FN = (35 kg) (9.80 m/s^2[down]) - (35 kg) (0.49 m/s^2 [up]) = 343 N [down] - 17.15 [up] = 325.85 or 326 N [down] Downward force being plausible to me via the awkward "pulling" feeling to be experienced riding up in some elevators. e) v = 0 + (0.49 m/s^2) (12...

Yes, apologizes for being imprecise. However, thank you very much. You pointing out that little slip caused me to see the problem(s) immediately. Ok Round 2... Fg = mg = 1030 kg x 9.8 m/s^2 = 10 094 [down] Fnet = FN + Fg + Ff = 12 000 N [up] - 10 094 N [down] - 1400N [down] = 506 N [up]...

Homework Statement An elevator containing three passengers (with a mass of 72 kg, 84, and 35 kg, respectively) has a combined mass of 1030 kg. The cable attached to the elevator exerts an upward force of 1.20 x ##10^4## N but friction opposing the motion of the elevator is 1.40 x ##10^3## N...

Thank you.

Homework Statement "Calculate the net force with the resultant angle acting on each object indicated in the diagram." The line going off to the southeast is supposed to be straight. My computer art skills aren't great. | 22 N | |_ _ _ _ _ \ ) 35 degrees \ \ 38 N 2...

Thank you very much for your patient reply.

Homework Statement Ok, relatively simple question here, but I have a newb doubt... "A basketball player with a mass of 112kg can jump 0.92 m into the air during a slam dunk competition. Calculate the force that pulls the player back towards the floor." Homework Equations ## \vec f = m \vec...

Thank you. Yeah, overall, the textbook isn't the greatest, but I'm just following its lead for this course.

Homework Statement A spring toy is launched from the ground at 2.3 m/s at an angle of 78° to the ground. What is the maximum height reached by the spring toy? Homework Equations ## \vec v_1v = \vec v_1 sin\Theta## ## \Delta \vec d = \vec v_1v \Delta t + \frac 1 2 \vec a \Delta t^2## The...