• ### The density of methyl alcohol is 792 kg/m3 at 0 °C. What would its density be at 197 °C?

1 answer · Physics · 7 months ago
• ### The density of methyl alcohol is 792 kg/m3 at 0 °C. What would its density be at 197 °C?

2 answers · Physics · 7 months ago
• ### What is the unstrained length of the cord?

A 7.2-kg bowling ball is attached to the end of a nylon cord with a cross-sectional area of 3.75 x10^-5 m2. The other end of the cord is fixed to the ceiling. When the bowling ball is pulled to one side and released from rest, it swings downward in a circular arc. At the instant it reaches its lowest point, the bowling ball is 1.6 m lower than the... show more
A 7.2-kg bowling ball is attached to the end of a nylon cord with a cross-sectional area of 3.75 x10^-5 m2. The other end of the cord is fixed to the ceiling. When the bowling ball is pulled to one side and released from rest, it swings downward in a circular arc. At the instant it reaches its lowest point, the bowling ball is 1.6 m lower than the point it was released from, and the cord is stretched 2.51 x10^-3 m from its unstrained length. What is the unstrained length of the cord? Hint: When calculating any quantity other than the strain, ignore the increase in the length of the cord.
1 answer · Physics · 7 months ago
• ### If the skier's acceleration up the slope has a magnitude of 0.9 m/s2, what is the original (unstretched) length of the cable?

A 57-kg snow skier is being pulled up a 13° slope by a steel cable. The cable has a cross-sectional area of 7.23x10^-5 m2. The cable applies a force to the skier, and, in doing so, the cable stretches by 2.04 x10^-4 m. A frictional force of magnitude 62 N acts on the skis and is directed opposite to the skier's motion.
A 57-kg snow skier is being pulled up a 13° slope by a steel cable. The cable has a cross-sectional area of 7.23x10^-5 m2. The cable applies a force to the skier, and, in doing so, the cable stretches by 2.04 x10^-4 m. A frictional force of magnitude 62 N acts on the skis and is directed opposite to the skier's motion.
1 answer · Physics · 7 months ago
• ### What is the radius of the wire at the same strain as the spider's thread, when the thread is stressed by the full weight of the spider?

A 9.00x10^-4kg spider is hanging vertically by a thread that has a Young's modulus of 1.20x10^8 N/m^2 and a radius of 1.50x10^-5 m. Suppose that a 87-kg person is hanging vertically on an aluminum wire.
A 9.00x10^-4kg spider is hanging vertically by a thread that has a Young's modulus of 1.20x10^8 N/m^2 and a radius of 1.50x10^-5 m. Suppose that a 87-kg person is hanging vertically on an aluminum wire.
1 answer · Physics · 7 months ago
• ### Find the tension in the wire when the tuning peg is turned through two revolutions.?

One end of a piano wire is wrapped around a cylindrical tuning peg and the other end is fixed in place. The tuning peg is turned so as to stretch the wire. The piano wire is made from steel (Y = 2.0x10^11 N/m^2). It has a radius of 0.76 mm and an unstrained length of 0.81 m. The radius of the tuning peg is 2.0 mm. Initially, there is no tension in... show more
One end of a piano wire is wrapped around a cylindrical tuning peg and the other end is fixed in place. The tuning peg is turned so as to stretch the wire. The piano wire is made from steel (Y = 2.0x10^11 N/m^2). It has a radius of 0.76 mm and an unstrained length of 0.81 m. The radius of the tuning peg is 2.0 mm. Initially, there is no tension in the wire, but when the tuning peg is turned, tension develops. Find the tension in the wire when the tuning peg is turned through two revolutions. Ignore the radius of the wire compared to the radius of the tuning peg.
1 answer · Physics · 7 months ago
• ### Find the magnitude and direction of the sum of momenta of the two joggers.?

An 85-kg jogger is heading due east at a speed of 1.5 m/s. A 55-kg jogger is heading 32° north of east at a speed of 3.8 m/s. Find the magnitude and direction of the sum of momenta of the two joggers. The magnitude is 328.4, but I can't get the angle correct for some reason! Please Help!
An 85-kg jogger is heading due east at a speed of 1.5 m/s. A 55-kg jogger is heading 32° north of east at a speed of 3.8 m/s. Find the magnitude and direction of the sum of momenta of the two joggers. The magnitude is 328.4, but I can't get the angle correct for some reason! Please Help!
2 answers · Physics · 8 months ago
• ### How much work (in Joules) can a 3.0 hp lawnmower engine do in 1 hour? ?

(1hp = 746 W and 1 h = 3600 s).
(1hp = 746 W and 1 h = 3600 s).
2 answers · Engineering · 8 months ago
• ### How does speed affect the friction between a road and a skidding tire?

2 answers · Physics · 8 months ago
• ### At what height is its speed equal to v/2?

A block slides down a smooth ramp, starting from rest at a height h. When it reaches the bottom, it’s moving at speed v. It then continues to slide up a second smooth ramp. At what height is its speed equal to v/2?
A block slides down a smooth ramp, starting from rest at a height h. When it reaches the bottom, it’s moving at speed v. It then continues to slide up a second smooth ramp. At what height is its speed equal to v/2?
1 answer · Physics · 8 months ago
• ### What is the speed at which the satellite travels?

A satellite is in a circular orbit about the earth (ME = 5.98E24 kg). The period of the satellite is 4.20E4s.
A satellite is in a circular orbit about the earth (ME = 5.98E24 kg). The period of the satellite is 4.20E4s.
2 answers · Physics · 8 months ago
• ### Is the upward force of a seat at the top of a ferris wheel greater less or equal to the passenger's weight?

At the top of a Ferris wheel, is the upward force the seat applies to the passenger greater than, less than, or equal to the passenger’s weight? Explain.
At the top of a Ferris wheel, is the upward force the seat applies to the passenger greater than, less than, or equal to the passenger’s weight? Explain.
8 answers · Physics · 9 months ago
• ### What would be the satellites's orbital period?

A satellite with mass (m) has a period of orbital (p) when it is in a circular orbit of radius (r) around a planet. If the satellite instead had a mass of 3m, what would be its orbital period? Answer in terms of p
A satellite with mass (m) has a period of orbital (p) when it is in a circular orbit of radius (r) around a planet. If the satellite instead had a mass of 3m, what would be its orbital period? Answer in terms of p
2 answers · Physics · 9 months ago
• ### A person's weight would decrease if earth's radius increased with no change in mass. Why would this be?

4 answers · Physics · 9 months ago
• ### Why are people in the International Space Station weightless?

Need an explanation for physics
Need an explanation for physics
20 answers · Physics · 9 months ago
• ### Can someone explain the resonance of this structure?

Where do I move the electrons first to begin the resonance structure?
Where do I move the electrons first to begin the resonance structure?
Chemistry · 9 months ago
• ### Organic Chemistry naming functional groups?

Will someone double check this for me?
Will someone double check this for me?
2 answers · Chemistry · 9 months ago
• ### What is the mass of the B block so that the two blocks remain stationary?

Theta 1= 25 Theta 2= 40 Neglect friction.
Theta 1= 25 Theta 2= 40 Neglect friction.
1 answer · Physics · 9 months ago
• ### What is the mass of the B block so that the two blocks remain stationary?

Theta 1= 25 Theta 2= 40 Neglect friction.
Theta 1= 25 Theta 2= 40 Neglect friction.
1 answer · Physics · 9 months ago
• ### What is the definition of horizontal range in physics?

1 answer · Physics · 9 months ago