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Hopping into your Porsche, you floor it and accelerate at 13.0 m/s2 without spinning the tires. Determine the minimum coefficient of static friction between the tires and the road needed to make thi
A sealed metal container can withstand a pressure difference of 0.670 atm. The container initially is filled with an ideal gas at 30 degrees celsius and 1.3 atm.
If an automobile rounds this curve at 30 M/S , what is the minimum coefficient of static friction between tires and road needed to prevent skidding?
The speed of ocean waves depends on their wavelength λ(measured in meters) and the gravitational field strength g (measured in m/s2) in this way: v = Kλpgq where K is a dimensio
A bicycle wheel of radius 0.70 m is rotating at an angular speed of 6.3 rad/s as it rolls on a horizontal surface without slipping. What is the linear speed of the wheel?
Consider four point masses: the 1.0 kg mass is 1.0 m from the origin, the 2.0 kg mass is 2.0 m from the origin, the 3.0 kg mass is 3.0 m from the origin, and the 4.0 kg mass is located 4.0 m from th
Calculate the electric field at the center of a square 50.6 cm on a side, if one corner is occupied by a +43.0 µC charge and the other three are occupied by -25.0 µC charges. (Assume the
A 300 block on a 56 -long string swings in a circle on a horizontal, frictionless table at 70. What is the speed of the block? What is the tension on the string?
1. A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 15.0 m/s when the hand is 1.70 m above the ground. How long is the ball in the air b
Find the coefficient of kinetic friction between a 4.3- block and the horizontal surface on which it rests if an 80 spring must be stretched by 2.7 to pull the block with constant speed. Assume the
Two particles are fixed to an x axis: particle 1 of charge -1.00 x 10-7 C at x = 6.00 cm, and particle 2 of charge +1.00 x 10-7 C at x = 24.0 cm. Midway between the particles, what is their net electr
A metallic sphere has a charge of +4.7 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 7.3 109 electrons are transferred. What are the charges of the sphere an
A billiard ball of mas 0.3kg moves with a speed of 5m/s and collides elastically with a ball of mass 0.2kg moving in the opposite direction with a speed of 3m/s. Show that because momentum is conser
Is it possible for the velocity and the acceleration of an object to have opposite signs? If not, state a proof. If so, give an example of such a situation and sketch a velocity vs. time graph to pr
(a) Use the data in Problem 1 to construct a smooth graph of position versus time. (b) By constructing tangents to the x(t) curve, find the instantaneous velocity of the car at several instants. (c)
Two equally charged particles are held 3.2 x 10^3 m apart and then released from rest. The initial acceleration of the first particle is observed to be 7.0 m/s^2 and that of the second to be 9.0 m/s
A rabbit runs in a straight line with a velocity of +1.4 m/s for a period of time, rests for 12 s, and then runs again along the same line at +0.54 m/s for an unknown amount of time. The rabbit tra
Suppose she drives around a flat curve in the road (radius of curve=25 meters). If her tires are just on the verge of slipping as she drives through the curve, what is her speed?
A 2.2 kg object slides down a frictionless track (starting 0.35 m above the ground) to a horizontal surface where it collides elastically with a 0.3 kg mass. 2.8 m later the 0.3 kg mass hits a k=16
An elephant has legs that stretch 2.3 from its shoulders to the ground. How much time is required for one leg to swing forward after completing a stride?
What is the SHORTEST distance in meters she must walk (in any direction) to get to a location where there is no sound, due to destructive interference? The velocity of the sound is 350m/s.
Suppose an electron starting from rest is accelerated in a uniform electric field directed horizontally and having a magnitude of 2900 N/C. The electric field covers a region of space 12.5 cm wide.
When the rock strikes the styrofoam, it becomes imbedded in the block and causes the block to swing backward. a) Calculate the period of oscillation of the styrofoam as it swings backward.
Find the magnitude of the net gravitational force exerted by these objects on a 42.0-kg object placed midway between them.(answer in newtons)
Calculate the amoungt of elastic potential energy the spring has while compressed on on the table.