Please see the attached file for full problem description. 5. Two metal plates are held at a potential difference of 40 volts, in a vacuum. A proton is released near the positive plate, and moves toward the negative plate under the influence of the electric field. A proton's mass is 1.67 * 10^-27 kg. (A) Just before the pr
Please solve problems 13, 14, 15, 18 and 22 in the attachment.
Question 1: A 3.0-g bullet traveling at 350 m/s hits a tree and slows down uniformly to a stop while penetrating a distance of 12 cm into the tree's trunk. What was the force exerted on the bullet in bringing it to rest? Question 2: A big car of mass 2m travels at speed v, and a small car of mass m travels with a speed 2v. Bo
Radiation of a certain wavelength causes electrons with a maximum kinetic energy of 0.62 eV to be ejected from a metal whose work function is 2.65 eV. What will be the maximum kinetic energy (in eV) with which this same radiation ejects electrons from another metal whose work function is 2.01 eV? Units are in eV.
A wheel that is rotating at 33.3 rad/s is given an angular acceleration of 2.15 rad/s/s. Through what angle has the wheel turned when its angular speed reaches 72.0 rad/s?
Take g= 9.8ms(-2) Please answer all questions with full explanations thank you A cyclist starting from rest freewheels for 200m down a slope of 1 in 10 (sin0 = 0.1) If the mass of the cycle and rider is 75kg: 1) What is the loss of potential energy of the cycle+rider? 2) If the speed of the cycle at the bottom of the h
The distance between the centers of the Earth and the moon is 3.8 x 10^8 m. Assume that the moon moves in a circular orbit about the center of the Earth. Estimate the period of the orbit to the nearest day. *Mass of earth = 6.0 x 10^24 kg *1 day = 8.6 x 10^4 seconds *Distance between the centers of Earth and Moon = 3.8 x 10^8
Mark the following statements true or false. If you mark it false, tell why it is false and how it could be changed to make it true. 1. If a force F acts on a particle of mass m which is moving at a speed v, we define the work done to be the change in the quantity 1/2mv^2. 2. Work is necessarily a positive quantity. 3.
Energy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is one kilocalorie, defined as 1 kcal = 4186 J. Metabolizing one gram of fat can release 9.00 kcal. A student decides to try to lose weight by exercising. She plans to run up and down the stairs in a football stadium as fast as she can a
Having much difficulty with this word problem: A water well has an 8-inch diameter and is 175 feet deep. Assume that water enters the well at a rate of 4 gallons per minute and the pump works at a rate of 12 gallons per minute. If the water is 25 feet from the top of the well, determine the amount of work done in pumping it
1. There is an analogy between rotational and translational physical quantities. Identify the rotational term analogous to each of the following linear quantities: acceleration, force, mass, work, translational kinetic energy, linear momentum, impulse. (Example: impulse F Delta-t corresponds to angular impulse, tau Delta-t . (Gr
1. (a) What is the momentum of a 1.20 x 10^4 kg garbage truck moving at 30.0 m/s? (b) At what speed would an 8.00 kg trash can have the same momentum? 2. One hazard of space travel is debris left by previous missions. There are several thousand masses large enough to detect by radar orbiting the earth, but there are far grea
In an atwoods machine experiment, the larger mass is 1.8kg and the smaller mass is 1.2kg. Ignoring friction what is the acceleration of the masses when they are released from rest?
A 100 kg object is pulled upwards 5.0 meters by a rope with an acceleration of 1.0 m/s^2. Find the work done by the tension force in the rope.
1, Three identical balls are thrown from the top of a building, all with the same initial speed. Ball 1 is thrown horizontally, ball 2 is thrown at some angle above the horizontal, and ball 3 is thrown at some below the horizontal. Rank the speed of the balls as they reach the ground from fastest to slowest. A,1-2-3 B,2-1-3
1.The anode (positive terminal) of an X-ray tube is at a potential of +90 000 V with respect to the cathode (negative terminal). (a) How much work (in joules) is done by the electric force when an electron is accelerated from the cathode to the anode? (b) If the electron is initially at rest, what kinetic energy does the el
(See attached file for full problem description and diagrams) --- 3. The filament of a light bulb has a resistance of 580 Ω. A voltage of 120 V is connected across the filament. How much current is in the filament? 13. A cylindrical copper cable carries a current of 1200 A. There is a potential difference of 1.
Which is the correct answer. During an evening news broadcast in Helsinki, Finland, the meteorologist indicated that the day's lowest temperature was -4.0 °C. What is the corresponding value of this temperature on the Fahrenheit scale? A -7.2 °F B -4.0 °F C 17 °F D 25 °F E 39 °F Complete th
Please help with a brief explanation for each of the following questions 1. If you fill a glass bottle with water and seal it tight and leave it in a hot car on a summer day, it will break (I can testify to this from personal experience!). Likewise, if you fill a glass bottle with water and seal it tight and put it in yo
(See attached file for full problem description) --- 1. An astronaut orbits the earth in a space capsule whose height above the earth is equal to the earth's radius. How does the mass of the astronaut in the capsule compare to her mass on the earth? A It is equal to her mass on earth. B It is equal to one-half of he
(See attached file for full problem description) --- 37. A block whose weight is 45.0 N rests on a horizontal table. A horizontal force of 36.0 N is applied to the block. The coefficients of static and kinetic friction are 0.650 and 0.420, respectively. Will the block move under the influence of the force, and, if so, what wi
A 810-kg car accelerates from rest to 27 m/s in a distance of 120 m. What is the magnitude of the average net force acting on the car? A 740 N B 2500 N C 91 N D 1300 N E 7900 N Two forces act on a 4.5-kg block resting on a frictionless surface as shown (see attached file). What is the magnitude of the
A ferry can travel at an optimal speed of 8 km/h in still water measured relative to the shore. What is the optimal speed of the ferry, relative to the shore, if it moves perpendicular to a 6 km/h current? A 4 km/h B 8 km/h C 10 km/h D 14 km/h E 28 km/h A baseball is hit upward and travels along a pa
A park ranger wanted to measure the height of a tall tree. The ranger stood 6.10 m from the base of the tree; and he observed that his line of sight made an angle of 73.5° above the horizontal as he looked at the top of the tree. What is the height of the tree? A .5.84 m B 8.77 m C 11.7 m D 17.3 m E 20.6
Physics: How far will the car travel in 12 seconds? What is the height, expressed in feet, of the diving platform?
A car, starting from rest, accelerates in a straight-line path at a constant rate of 2.5 m/s2. How far will the car travel in 12 seconds? A. 180 m B. 120 m C. 30 m D. 15 m E. 4.8 m In the sport of platform diving, a platform is set at a height of 7.3 m above the surface of the water. What is the height, expres
7. A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.0 m/s. The car is a distance d away. The bear is 26 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the maximum possible value for d? 19. In getting ready to slam-dunk the ball
I need some help with these two physics questions on vectors: 33. An ocean liner leaves New York City and travels 18.0° north of east for 155 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions (a) due east and (b) due
11. You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. This monument rises to a height of 192 m. You estimate your line of sight with the top of the arch to be 2.0° above the horizontal. Approximately how far (in kilometers) are you from the base of the arch? 21.
What is the potential difference in Volts from A to B if 13.2 Joules of work are required to move a charge of -.4405C from A to B?
Work and energy: Skier's gravitational potential energy; cyclist's speed at crest of hill; frictional force on motion of a car
A 82.3-kg skier rides a 2860-m-long lift to the top of a mountain. The lift makes an angle of 16.6° with the horizontal. What is the change in the skier's gravitational potential energy? A cyclist approaches the bottom of a gradual hill at a speed of 28.7 m/s. The hill is 8.84 m high, and the cyclist estimates that she is go