The helium-neon lasers most commonly used in student physics laboratories have average power outputs of 0.250 mW. If such a laser beam is projected onto a circular spot 8.754 mm in diameter, what is its intensity?
The helium-neon lasers most commonly used in student physics laboratories have average power outputs of 0.250 mW. If such a laser beam is projected onto a circular spot 2.617 mm in diameter, what is its intensity?
Write the word or phrase that best completes each statement or answers the question. 17) SHORT ANSWER. 17) A tool has a mass of 8.1 kg. The same tool in outer space will have a mass of kg. 18) An object of mass I kg is pushed across a horizontal table by a force of 1N. The observed acceleration is...
James Bond is sitting in a 12.0 kg turret on a horizontal surface. James has a mass of 78.0 kg. If he is being pulled to the right with a force of magnitude equal to 12.0 N and pulled to the left with a force of magnitude equal to 17.0 N, what is the magnitude and direction of Mr. Bond's...
The speed of an object undergoing 1-dimensional motion is given by the following equation: What is the magnitude of the acceleration of the object (in m/s2) at x = 10 m? I got this much But can't figure out how to deal with both variables We were unable to transcribe this imageWe were unable to transcribe this image
0.14 The diagram represents a map of an island with contour lines drawn at 100 m intervals. The island is 14 km across at its maximum dimension. Indicate the magnitude and direction of gradient of height at P, Q and R. With what acceleration would an object slide down a slippery surface at P? 300 200 100
A rocket-powered hockey puck moves on a horizontal frictionless table. The figures shows graphs of vx and vy, the x- and y-components of the puck's velocity. The puck starts at the origin.Part AWhat is the magnitude of the puck's acceleration at t = 5 s?Express your answer to two significant figures and include the appropriate units.
A spool of thread, free to unwind, is on a horizontal surface (with friction) and pulled directly upward (ty) a times. The spool rolls without slipping on the floor. The spool has a mass M, moment of inertia 1, and a radius of R. Assume the string is wrapped around the spool at a radius r (where r <R). 1)...
A circuit is constructed with four resistors, one inductor, one battery and a switch as shown. The values for the resistors are: R1 - R-410, R3 - 700 and Ry - 145 . The inductance is L-200 mH and the battery voltage is V-12 V. The positive terminal of the battery is indicated with a + sign. WW11 R L...
. Using the figure of the gel below, draw in the DNA bands in the left lane that would appear from the DNA of the person described in the question above. The right lane contains a molecular weight standard. the questions are When circular DNA is sequenced, the nucleotide base pairs are numbered starting from an fixed position on the...