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Tim and Rick both can run at speed vr and walk at speed vw , with vr>vw . They set off together on a journey of distance D . Rick walks half of the distance and runs the other half. Tim walks hal
Two point charges lie along the y-axis. A charge of q1 = -8.5 µC is at y = 6.0 m, and a charge of q2 = -7.5 µC is at y = -4.0 m. Locate the point (other than infinity) at which the total
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle? ___m/s
A 10g block with a charge of 8*10^-5 C is placed in an electric field E = (3000i-600j) N/C What are the magnitude and direction of the electrostatic forces on the block (relative to the positive dir
Normal atmospheric pressure is 1.013 x 105 Pa. The approach of a storm causes the height of a mercury barometer to drop by 12.3 mm from the normal height. What is the atmospheric pressure? (The dens
A solid sphere of brass (bulk modulus of 1.40 x 1011 N/m2) with a diameter of 4.00 m is thrown into the ocean. By how much does the diameter of the sphere decrease as it sinks to a depth of 2.1 km?
An electron is accelerated by a constant electric field of magnitude 305 N/C. (a) Find the acceleration of the electron.
The average density of the planet Uranus is 1.27*103kg/m3. The ratio of the mass of Neptune to that of Uranus is 1.19. The ratio of the radius of Neptune to that of Uranus is 0.969. Find the average
A tube is open at only at one end. A certain harmonic produced by the tube has a frequency of 465 Hz. The next higher harmonic has a frequency of 598 Hz. The speed of sound in air is 343 m/s.
How close to the film should the lens be placed to form a sharp image of an object that is 6.0 away? What is the magnification of the image on the film?
While exploring the projectiles from Newton's Mountain, is it possible to launch a projectile with just enough velocity to have it land on the Earth betwen points A and B?
An airplane, diving at an angle of 54° with the vertical, releases a projectile at an altitude of 770 m. The projectile hits the ground 3.50 s after being released. What is the speed of the airc
Find that frequency and the tension in the wire. (Use any variable or symbol stated above along with the following as necessary: vs for the speed of sound.)
The tube on the right has cross-sectional area A' = A/2. If the net force on the tube assembly is zero, what must be the speed v' of the water flowing through the tube on the right? Neglect gravity,
What is the distance of closest approach if the thrust points in the radial direction?
A small object A, electrically charged, creates an electric field. At a point P located 0.250 directly north of A, the field has a value of 40.0 directed to the south. What is the charge of object A
A bicycle has wheels with a 30-centimeter radius. If smaller wheels with a 25-centimeter radius are installed, what is the change in linear speed of the bicycle if the wheels rotate at 1 revolution
In other words, find t2-t1, and How far does the motorcycle travel from the moment it starts to accelerate (at time t1) until it catches up with the car (at time t2)
Four identical metallic objects carry the following charges: +2.2 µC, +5.4 µC, -3.4 µC, and -8.8 µC. The objects are brought simultaneously into contact, so that each touches
Consider the point (x, (x^2/4L)), where x is very large. Find approximate expressions for the speed and impact parameter at this point.
The planet jupiter has a mass 314 times larger than that of the earth (1.90 x 10^27). Its radius is 11.3 times larger than the earth's radius (7.15 x 10^7). Find the acceleration due to gracity on J
A circuit with C1=6*10^-6F, C2+3*10^-6, and potential difference=20V. Capacitor C1 is first charged by closing switch S1, Switch S1 is then opened, and the charged capacitor is connected to the unch
What is significant about the vertical velocity when the projectile is at it's maximum height? Do we consider air resistance in regards to projectile motion? Is an object in uniform circular motion ac
An automobile is moving at 90 km/h and ascends a hill of gradient 1 in 25 (vertical rise of 1 unit for horizontal distance of 25). Mass is 1300 kg. What is the power in kW needed for the climb up th
Calclate the initial velocity necessary to get the same range as part (a) including air resistance. i.e. How much harder will you need to hit the ball in the real world?