Recent content by PhysicsCCR

Homework Statement Water entering a house flows with a speed of 0.228 m/s through a pipe of 1.08 cm inside radius. What is the speed of the water at a point where the pipe tapers to a radius of 2.39 mm?Homework Equations Continuity equation: A1V1 = A2V2 Bernoulli's Principle: P1 + .5pv1^2 +...

Homework Statement Three forces in the x-y plane act on a 2.6 kg mass: 13.3 N directed at 65°, 7.6 N directed at 160 °, and 10.1 N directed at 236° . All angles are measured from the positive x-axis, with positive angles in the Counter-Clockwise direction. Calculate the magnitude of the...

Oh, okay. Thank you, Ehild!

Homework Statement An elevator in a tall building is allowed to reach a maximum speed of 3.89 m/s going down. What must the tension be in the cable to stop this elevator over a distance of 2.70 m if the elevator has a mass of 1320 kg including occupants? Homework Equations Vfy^2 =...

All right, thank you for all your help!

Which is true/false? When a force is called a "normal force", it is: A force that is always equal to the weight of the object. A force that is perpendicular to the surface of the Earth at any given location. A contact force perpendicular to the contact surface between two solid objects...

Homework Statement An athlete executing a long jump leaves the ground at a 29.6° angle and travels 7.43 m. What was the take-off speed? I have 4 unknown variables: t, initial velocity in the x direction (V[SIZE="1"]ix), initial velocity in the y direction (V[SIZE="1"]iy). and the initial...

Never mind. I figured it out.

I have attempted the problem, but I have two unknown variables: x final and t. I'm trying to find t, but how can I find x final first?

A football is kicked at ground level with a speed of 19.8 m/s at an angle of 33.8° to the horizontal. How much later does it hit the ground?

I agree with what you're saying. I much prefer using standard notation, rather than scientific notation. And I agree with what you said about machines benefiting us, not the other way around. I used to always submit my answers in standard notation, but the homework system always convert it to...

Well, in real life, of course, I'll say 4.87 cm, or about 5 cm. But since the online physics homework system uses scientific notation, I thought I might just stick with that.

Finally got the right answer, which is 4.87E-2 m. Thanks for your help!

Lmao! It's all good, man. I see what I did wrong there.

lol I messed up my arithmetic. Thanks for pointing that out, Simon. It is 1.6 m^3. I accidentally multiply instead of divide.