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A: Correct
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A: Given data: Force (F) = 12 N Displacement (d) = 5 m Required: Work (W)
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Q: 1. How far must a 5N force pull a 50g toy car if 30joules of energy are transferred?
A: Hi, Since you have asked multiple question, we will solve the first question for you. If you want…
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Q: True or False Like mechanical energy, current electricity transfers to PE to KE and into work?
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Q: If a CD player uses electricity at a rate of 14 W, how much energy does it use during an 9 hour day?…
A: Power = 14 W Time = 9 hours Using formula , Power = energy /time 14W = energy/9hours Energy = 14 * 9…
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Q: Suppose you have a 1000Wmicrowave that you need to run for 5minto heat up your dinner.1. How much…
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Q: My computer uses 15 W, if I run it for 3 hours how many Joules have I used?
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A: Energy required is 19400 Joules. Explanation is in next step.
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A: Answer
Q: 12. Which formula represents the law of conservation of energy? OPE, = mgh ME=KE+ PE…
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A: Given that- Bulb power(p)=38W Energy (E)=2100J To determine that- Find the time taken?
Q: 11) What is the energy consumed by running a 1500W aircon unit 8.0 hours per day for 30days?
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Q: 1 WH = A) 360 joules B) 36000 joules C) 3600 joules D) 36 joules
A: Joule in W is: Also,
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Q: How can a 50-W light bulb use more energy than a 1000-W oven?
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- Integrated Concepts Find the radius of curvature of the path of a 25.0-Mev proton moving perpendicularly to the 1.20T field of a cyclotron.Do the unit conversions necessary to show that hc=1240eVnm, as stated in the text.Ionizing radiation can impair the ability of a cell to repair DNA. What are the three wavs the cell can respond?
- Use the laws of conservation of momentum and energy to explain how a shape charge can direct most of the energy released in an explosion in a specific direction. (Note that this is similar to the situation in guns and cannonsmost of the energy goes into the bullet.)Cosmic rays are high-energy charged particles produced by astronomical objects. Many of the cosmic rays that make their way to the Earth are trapped by the Earths magnetic field and never reach the surface. These trapped cosmic rays are found in the Van Allen beltsdonut-shaped zones over the Earths equator (Fig. 30.34). These cosmic rays are mostly protons with energies of about 30 MeV. The inset in the figure shows a cosmic ray proton as it is about to enter the Earths magnetic field. The cosmic rays velocity is initially perpendicular to the field. Three students discuss what happens to the incoming cosmic ray. Decide which student or students are correct. Figure 30.34 The Van Allen belts are donut-shaped zones of trapped cosmic rays above the Earths surface. Inset: What happens to this cosmic ray as it enters the Earths magnetic field? Shannon: The velocity is perpendicular to the magnetic field, so the cosmic ray just passes through the field and hits the Earths atmosphere. Avi: What you are saying is that the magnetic field exerts no force on the cosmic ray. Actually, it exerts a huge force because the velocity is perpendicular to the magnetic field. The force will be into the page. Cameron: Avi is right. The cosmic ray proton is going to feel a huge magnetic force. Because it is positively charged, it will be pushed upward along the magnetic field lines. Shannon: I never said the force was zero. There is a force, but the force is perpendicular to the magnetic field lines. In this case, thats to the lefttoward the Earth. Avi: The force is perpendicular to the magnetic field, but it also has to be perpendicular to the velocity. Because B and v are both in the plane of the page, the force must be perpendicular to the page.Some satellites use nuclear power. (a) If such a satellite emits a 1.00-W flux of rays having an average energy of 0.500 MeV, how many are emitted per second? (b) These rays affect other satellites. How far away must another satellite be to only receive one ray per second per square meter?
- An α particle, 4He2+, has a mass of 4.00151 amu. Determine the value of its charge-to-mass ratio in C/kg . (The electron has a charge of −1.60218×10^−19 C , 1mol=6.0221421×10^23particles .)1.Tell how many protons, electrons and neutrons there are in each of the ff. Atoms:2. What is the repulsive electrical force between two protons 4.0 x10 -15 m apart from each other in an atomic nucleus?
- The diagram shows a mass spectrometer used for measuring the masses of isotopes. It consists of an ion generator and accelerator, a velocity selector and an ion separator, all in a vacuum. In one experiment, tin ions, each of which carries a charge +1.6 × 10-19C, are produced in the ion generator and are then accelerated by a p.d. of 20kV. Tin has a number of isotopes, two of which are tin-118 (118Sn) and tin-120 (120Sn). (a.) In practice, all ions produced by the ion generator have a range of speeds. A velocity selector is used to isolate ions with a single speed. In the velocity selector, the isolated ions go through undeviated, though being acted upon by forces from both the electric and magnetic fields. (i.) The plates producing the electric field have a separation of 2.0cm. The potentials of the plates are marked on the diagram. What is the magnitude of the force on an ion due to this electric field in the velocity selector? (ii.) Write down the condition and equation which must…The diagram shows a mass spectrometer used for measuring the masses of isotopes. It consists of an ion generator and accelerator, a velocity selector and an ion separator, all in a vacuum. In one experiment, tin ions, each of which carries a charge +1.6 × 10-19C, are produced in the ion generator and are then accelerated by a p.d. of 20kV. Tin has a number of isotopes, two of which are tin-118 (118Sn) and tin-120 (120Sn). (c.) After selection, the ions are separated using a magnetic field on its own, as shown in the diagram.(i.) Name the trajectory of the ions in the ion separator. Explain your answer.(ii.) Show that the radius of the trajectory is directly proportional to the mass of the ion.(iii.) On the ion separator, draw the trajectories of the two isotopes of tin tillthey strike the photographic plate P. Label your diagram.Explain why they strike the plates at different points.The diagram shows a mass spectrometer used for measuring the masses of isotopes. It consists of an ion generator and accelerator, a velocity selector and an ion separator, all in a vacuum. In one experiment, tin ions, each of which carries a charge +1.6 × 10-19C, are produced in the ion generator and are then accelerated by a p.d. of 20kV. Tin has a number of isotopes, two of which are tin-118 (118Sn) and tin-120 (120Sn). (a.) In practice, all ions produced by the ion generator have a range of speeds. A velocity selector is used to isolate ions with a single speed. In the velocity selector, the isolated ions go through undeviated, though being acted upon by forces from both the electric and magnetic fields. (i.) Write down the condition and equation which must be satisfied if the ions are to emerge from the exit hole of the velocity selector. Define the terms in the equation. Redraw the section of thevelocity selector and indicate the different forces acting on the ions there and use…
