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Elm Street has a pronounced dip at the bottom of a steep hill before going back uphill on the other side. Your science teacher has asked everyone in the class to measure the radius of curvature of the dip. Some of your classmates are using surveying equipment, but you decide to base your measurement on what you've learned in physics. To do so, you sit on a spring scale, drive through the dip at different speeds, and for each speed record the scale's reading as you pass through the bottom of the dip. Your data are as follows. Speeds are 5, 10, 15, 20, 25 (in m/s) and Scale readings 599, 625, 674, 756, 834 (in N). Sitting on the scale while the car is parked gives a reading of 588 N. Analyze your data, using a graph, to determine the dip's radius of curvature.
An aluminum rod is 22.0 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod
sketch a scaled ray diagram and show the location of the iamge using 3 principle rays, calculate the magnification of the object
Inductive battery chargers, which allow transfer of electrical power without the need for exposed electrical contacts, are commonly used in appliances that need to be safely immersed in water, Find an expression for the emf induced in the secondary..
A red laser from the physics lab is marked as producing 632.8-nm light. When light from this laser falls on two closely spaced slits, What is the wavelength of light produced by the pointer
A helium-neon laser (wavelength = 630 nm) is used in a single-slit experiment with a screen 7.5 m away from the slit. what is the width of the central bright fringe on the screen
Light from a hydrogen discharge passes through a diffraction grating and registers on a detector 1.5 m behind the grating. find the position of the second member of the Paschen series
A force of 100 N is applied to a 50 kg mass in the direction of motion for a distance of 6.0 m, how much work is done by the varying force
A block of wood is compressed 2.4nm when inward forces of magnitude 128N are applied to it on two opposite sides. what is the effective spring constant of the block
Two particles with charges +8e and -4e are initially very far apart (inifinite distance). which is the change in the electric potential energy
A skier is accelerating down a 30 degree hill at 3.60 m/s^2. How long would it take her to reach the bottom of the hill, assume she starts from rest and accelerates uniformly, if elevation change is 170m.
a 3,000-kg vehicle collides with a 1,000-kg stationary vehicle. What was the speed of the 3,000-kg vehicle
questioni require these 5 questions answered. i want diagrams and step-by-step detailed solutions please 2.1 compute
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