Explain why there might be discrepancies for the different types of radiation if graphed in the same manner as your count rate versusinverse square of the distance graph. What type of radiation would you imagine having the most discrepancy?
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Two frictionless “hoverpucks” (puck 1 and puck 2) with mass 0.20 kg are travelling on a collision course with a third hoverpuck which is at rest and has mass 0.40 kg. Before they collide, puck 1 has velocity (1.0 m/s) î – (1.0 m/s) ĵ. After the collision they all stick together and have velocity (2.0 m/s) î + (0.5 m/s) ĵ. Friction is negligible.
a) What is the velocity of puck 2 before the collision?
b) What is the total impulse on puck 1 during the collision?
c) If the duration of the collision was 0.15 s what was the average force exerted by puck 3 on puck 1?
d) How much kinetic energy is gained or lost by the three-puck system?
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A block of mass m = 2.00 kg is released from rest at h = 0.400 m above the surface of a table, at the top of a ? = 40.0
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Always when we want to represent the magnetic field of the earth we see a similar image:
enter image description here
My question is, what exactly does this show? What are the blue and orange lines, what do they represent? Why are they curved like that? I have a vague idea about field lines, but I do not fully comprehend this. An explanation would be appreciated
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The atmosphere many times is related to the typical
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1) Which is hottest? 200 F or 200 C or 200 Kelvin
2) Convert (- 40) C to Fahrenheit .
3) What is the hottest possible temperature?
4) Thermometers are used to measure temperature. There are many different types of thermometers. One type is based on a thermocouple . Briefly describe how a thermocouple works.
5) What is the recommended temperature for inside a residential refrigerator?
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A bicycle wheel has a diameter of 63.7 cm and a mass of 1.83 kg. Assume that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 125 N is applied tangent to the rim of the tire.
(a) What force must be applied by a chain passing over a 9.10 cm diameter sprocket if the wheel is to attain an acceleration of 4.47 rad/s2?__________N
(b) What force is required if the chain shifts to a 5.50 cm diameter sprocket?___________ N
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A billiard ball of mass mA = 0.400 kg moving with a speed vA,0 = 1.80 m/s strikes a second ball, initially at rest, of mass mB = 0.500 kg. As a result of the collision, the first ball is deflected off at an angle of 30.0 o with a speed vA = 1.10 m/s.
a) What is the speed vB and angle of deflection θB of ball B? Take the x axis to be the direction of motion of ball A before the collision.
b) Is the collision elastic? You must support your answer with a calculation.
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When two lenses are used in combination, the first one forms an image that then serves as the object for the second lens. The magnification of the combination is the ratio of the height of the final image to the height of the object. A 1.60cm -tall object is 51.0cm to the left of a converging lens of focal length 40.0cm . A second converging lens, this one having a focal length of 60.0cm , is located 300cm to the right of the first lens along the same optic axis.
A)
Find the location and height of the image (call it I1) formed by the lens with a focal length of 40.0cm .
Enter your answer as two numbers separated with a comma in cm
B)
I1 is now the object for the second lens. Find the location and height of the image produced by the second lens. This is the final image produced by the combination of lenses.
Enter your answer as two numbers separated with a comma in cm
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If you take a two-litre plastic soda bottle and blow across the lid, you get a very low note. If you squeeze the bottle and make it flat, you get a higher note. What's going on?
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A positron with kinetic energy 2.5 keV is projected into a uniform magnetic field Bvec of magnitude 0.90 T, with its velocity vector making an angle of 89° with Bvec. Find the following values for the positron's helical path.
(a) the period
____s
(b) the pitch
____m
(c) the radius
_____m
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Suppose the charge q2 in the figure can be moved left or right along the line connecting the charges q1 and q3. Given that q = +17
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A.) A 700- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 15.0 km/h in a direction of 30 o with respect to the positive x axis. The heavier car moves at 18 km/h at -41 o with respect to the positive x axis. What was the initial speed of the lighter car (in km/h)?
B.) What was the initial direction (as measured counterclockwise from the x-axis)?
I found the answer for A but can't seem to find the answer for B
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A 10 g bullet traveling at 430m/s strikes a 13kg , 1.1-m-wide door at the edge opposite the hinge. The bullet embeds itself in the door, causing the door to swing open.
1.What is the angular velocity of the door just after impact?
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A 2.00 mol sample of an ideal gas with a molar specific heat of CV = 5/2 R always starts at pressure 1.50 ✕ 10^5 Pa and temperature 350 K. For each of the following processes, determine the final pressure (Pf, in kPa), the final volume (Vf, in L), the final temperature (Tf, in K), the change in internal energy of the gas (ΔEint, in J), the energy added to the gas by heat (Q, in J), and the work done on the gas (W, in J) a.) The gas is heated at constant pressure to 460 K. b.) The gas is heated at constant volume to 460 K. c.) The gas is compressed at constant temperature to 200 kPa d.) The gas is compressed adiabatically to 200 kPa.
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