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A projectile is shot from the edge of a cliff 165 m above ground level with an initial speed of vo=105 m/s at an angle of 37.0° with the horizontal (a) Determine the time taken by the projectile t
A Hollywood daredevil plans to jump the canyon (d=58 m, h=17 m) on a motorcycle. Assume he desires a 3.1 second flight time. (a) What is the correct angle for his launch ramp?
A train moving at a constant speed of 58.0 km/h moves east for 45.0 min, then in a direction 56.0° east of due north for 13.0 min, and then west for 75.0 min. What is the average velocity of the
A third charge of +5.3 micro-Coulombs is placed at x = -0.27 m, y = 0 m. At what angle is the total electric filed is directed at the the point x = 0 m, y = +0.14 m if measured counter-clockwise fro
Pam, wearing a rocket pack, stands on frictionless ice. She has a mass of 41 kg. The rocket supplies a constant force for 22.0 m, and Pam acquires a speed of 64.5 m/s. Assume that air resistance is
An x-ray photon of wavelength 150.0 pm is absorbed by a stationary helium atom. (a) What is the momentum of the photon?
Two Cylindrical wires of identical length are madeof copper and aliminum. If they carry the same current and have the same potential difference across their length, what is the ratio of their radii?
A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with the outer edge of the wheel. Friction causes the wheel to stop in 2 seco
Car 1 is traveling at 85km/h approaching car 2 traveling at 60km/h. At 10m behind car 2, car 1 decelerates at 4.2m/s^2. What will be the distance between the cars at their closest approach?
The electric field near the surface of the earth is typically 100 N/C, directed downward. What is the ratio of the electric force on the bee to the bee's weight?
A metal target sphere of 20 cm diameter suspended out in space is given a charge of +1.00 nC. How much work must be done on a proton in taking it from very far away (essentially infinity) to the su
While running down the road, they come to a deep gorge, 14.4 m straight across and 100 m deep. The Roadrunner launches himself across the gorge at a launch angle of 16° above the horizontal, an
We consider a solid ball of mass 0.50 kg and radius 10 cm, rolling down an incline without slipping. Suppose the ball starts from rest and rolls enough that it drops vertically by a distance h = 0.5
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8410 N/C. The mass of the water drop is 3.20 x 10-9 kg. How many exces
Two charges are located on the x axis: q1 = +6.0 µC at x1 = +4.0 cm, and q2 = +6.0 µC at x2 = -4.0 cm. Two other charges are located on the y axis: q3 = +4.0 µC at y3 = +5.0 cm, an
(Let the positive x direction be to the right, and the positive y direction be upward.) a) Find the horizontal distance d it travels. b) What is the magnitude of the ball's initial velocity?
What is the horizontal component of its velocity as it hits the wall? (Indicate the direction with the sign of your answer.)
What must be his average speed if he is to meet the ball just before it hits the ground? (Consider up and the direction of the ball's initial motion to be the positive y and x directions.)
Car 1 is speeding up with an acceleration of magnitude 0.20m/s^2, and car 2 is slowing down with an acceleration of magnitude 0.30m/s^2. At what time do the cars pass next to one another?
What is the recoild speed of the person and the skateboard relative to the ground, assuming the skateboard moves without friction?
Calculate the y-component of the force exerted by B on C and Sum the two x-components to obtain the resultant x-component of the electric force acting on C and Sum the two y-components to obtain the
An electron has a momentum that is 90% larger than its classical momentum. a) Find the speed of the electron.
A golf ball rolls off a horizontal cliff with an initial speed of 14.8 m/s. The ball falls a vertical distance of 12.5 m into a lake below. (a) How much time does the ball spend in the air?
Which unit would you most likely use to measure the difference between the elevation of an airplane in flight and the height of a car on a road?
What is the velocity (magnitude and direction) of the passenger with respect to the water? Determine the directional angle relative to due east.