Physics - October 2006

Physics question involving centripetal force, coefficient of friction, and banking angle.....
A car of mass 1300 kg is moving at a speed of 28 m/s^2 on a 100 m radius curve. Find centripetal force, the coefficient of friction if there is no banking curve, and the banking angle if there is no friction....

I've found the centripetal force to be 10192 N, but i cant find the coefficient of friction or the banking ange....Any help is appreciated

2006-10-12 15:50:50 · 3 answers · asked by Anonymous

A bicyclist is finishing his repair on a flat tire when a friend rides by with a constant speed of 3.5m/s. Two seconds later the bicyclist hops on his bike and accelerates at 2.4m/s/s until he catches his friend. A) How much time does it take until he catches his friend? B) How far has he traveled in this time? C) What is his speed when he catches up?

2006-10-12 15:48:32 · 1 answers · asked by hbpq83 1

During an afternoon of target practice, you fire a Winchester .308 rifle of mass 3.8kg. The bullets have a mass of 9.72g and leave the rifle at a muzzle velocity of 860m/s. If you are sloppy and fire a round when the butt of the rifle is not firmly up against your shoulder, at what spped does the rifle butt smash into your shoulder?

2006-10-12 15:38:53 · 6 answers · asked by bdbush007 3

At this level do our laws of physics work???It makes me think that we still have so much to learn,when you think about something that doesn't seem to work right,while all else does........Tom Science

2006-10-12 15:28:21 · 7 answers · asked by tom science 4

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 51700 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical.

(a) What is the magnitude of the lift force?
(b) Determine the magnitude of the air resistance R that opposes the motion.

2006-10-12 15:13:58 · 3 answers · asked by Anna G 1

A billiard ball moving at a speed of 2.2 m/s strikes an identical stationary ball with a glancing blow. After the collision, one ball is found to be moving at a speed of 1.1 m/s in a direction making a 60 degree angle with the original line of motion.

Find the velocity of the other ball, and explain how you got your answer.

2006-10-12 14:44:00 · 1 answers · asked by Anonymous

A force F applied to an object of mass m1 produces an acceleration of 3.10 m/s2. The same force applied to a second object of mass m2 produces an acceleration of 1.20 m/s2. If m1 and m2 are combined, what is their acceleration under the action of the force F.

2006-10-12 14:34:14 · 4 answers · asked by Jayu P 1

i have to make a new temperature scale with a conversion to either celsius or kelvin. please help me.

2006-10-12 14:33:25 · 2 answers · asked by karyn u 1

When the instantaneous speed of the automobile is 6.00 m/s, What is the tangential acceleration component.
Magnitude

2006-10-12 14:32:18 · 1 answers · asked by Jayu P 1

2006-10-12 14:29:42 · 7 answers · asked by b5luvya 1

How long does it take an automobile traveling in the left lane at 50.0 km/h to pull alongside a car traveling in the same direction in the right lane at 30.0 km/h if the cars' front bumpers are initially 80 m apart?

2006-10-12 14:29:15 · 3 answers · asked by Jayu P 1

2006-10-12 14:27:20 · 3 answers · asked by Anonymous

2006-10-12 14:22:21 · 4 answers · asked by Slick 2

structures seem bigger from far away

2006-10-12 14:03:53 · 2 answers · asked by reynolds h 1

An electron of mass 9.11x10^-31 kg has an initial speed of 5.0x10^5 m/s. It travels in a straight line and its speed increases to 8.00x10^5 m/s ina distance of 10cm. Assuming its acceleration is constant, determine the force exerted on the electron. And what is the ratio of this force to the weight of the electron?

2006-10-12 13:48:32 · 3 answers · asked by Jayu P 1

all the colors (witha crayola crayon) you get black or dark brown and not a light whiteish color?

2006-10-12 13:47:00 · 3 answers · asked by Anonymous

To model a spacecraft, a toy engine is securely fastened to a large puck, which can glide with negligible friction over a horizontal furface, taken as teh xy plane. The 7.0kg puck has a velocity of 2.00i m/s at one instant. Eight seconds later, its velocity is to be (5.00i + 7.00j)m/s. Assuming the rocket engine exerts a constant total horizontal force, find the components of the force. Find its magniutde.

2006-10-12 13:44:23 · 2 answers · asked by Jayu P 1

Integral sign = I

Ie^X^2dx

I 2
I X
IE dx

??

Thank you!

(If the answer is wierd, please explain it!!!)

2006-10-12 13:36:36 · 2 answers · asked by ergonomia 2

huh?

2006-10-12 13:30:38 · 14 answers · asked by Anonymous

a quanity of gas has a volume of 0.20 cubic meter and an absolute temperature of 333 degrees kelvin. When the temperature of the gas is raised to 533 degrees kelvin, what is the new volume of the gas?

2006-10-12 13:26:46 · 3 answers · asked by kay_267 2

I'm stuck on a Physics problem-
A 7.5 kg block is resting on a horizontal surface, and is connected to a 5.50 kg mass suspended from a string passes over a frictionless pulley. Find the acceleration of the system and the tension in the string if the surface is:
(a)
smooth, and
(b)
the coefficient of friction is 0.190

I have found the acceleration of the system with the smooth surface, but i can't find the tension in the two strings or the acceleration of the system with the coefficient of friction.....

Any help is greatly appreciated.....

2006-10-12 13:26:35 · 3 answers · asked by Anonymous

a female cat got her tail cut off in an accident. a few months later she had 8 kittens

2006-10-12 13:20:10 · 6 answers · asked by andrew 3

I know a lot of people have already seen this, but I'm trying to create an electromagnet that can pick up at least 2lbs. Is it possible?

2006-10-12 13:14:28 · 1 answers · asked by burnholywater 2

I'm stuck on a Physics problem-
A 7.5 kg block is resting on a horizontal surface, and is connected to a 5.50 kg mass suspended from a string passes over a frictionless pulley. Find the acceleration of the system and the tension in the string if the surface is:
(a)
smooth, and
(b)
the coefficient of friction is 0.190

I have found the acceleration of the system with the smooth surface, but i can't find the tension in the two strings or the acceleration of the system with the coefficient of friction.....

Any help is greatly appreciated.....

2006-10-12 13:08:55 · 2 answers · asked by Anonymous

how much current flows through the component?

2006-10-12 13:04:32 · 4 answers · asked by Anonymous

elements are made of proton, electron and nuetron. electron is a fundamental particle. but proton and nuetron are made of three fundaments particles each. (quarks). if we can even divide protons into three different particles, then why does my professor say elements cant be broken any further?

2006-10-12 12:54:13 · 5 answers · asked by DJ Deep 3

2006-10-12 12:33:33 · 14 answers · asked by Janelle G 1

Yeah I know its a cheap way to get an answer but can you also tell me how to work it. Thanks. ~Flip

2006-10-12 12:09:32 · 3 answers · asked by Anonymous

Do you think inflating tyres of bicycles with Helium instead of air would make them significantly lighter?

2006-10-12 11:44:36 · 10 answers · asked by Alexis (From France) 1

A similar question will probably be on exam, & want to be sure I know how to do it. There is no equivalent problem in the textbook:

A light horizontal spring has a spring constant of 135 N/m. A 2.18 kg block is pressed against one end of the spring, compressing the spring 0.101 m. After the block is released, the block moves 0.287 m to the right before coming to rest.

What is the coefficient of kinetic friction between the horizontal surface and the block? Acceleration of gravity is 9.81 m/s^2.

2006-10-12 11:29:57 · 1 answers · asked by Mariska 2