Calculate the speed at certain points
The roller-coaster car shown in Fig. 6-41 (h1 = 30 m, h2 = 15 m, h3 = 30 m), is dragged up to point 1 where it is released from rest. Assuming no friction, calculate the speed at points 2, 3, and 4.1
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What is the pressure (in kPa) exerted by an object that has a base which is 2.0 cm by 4.0 cm nd a weight of 45.0 N.
Suppose that a diffraction grating produces first-order tracking beams that are 1.1 mm apart at a distance of 2.9 mm from the grating. Estimate the spacing between the slits of the grating.
How caloric needs change during each trimester of pregnancy. What changes occur in protein, vitamin, and mineral requirements? What are the possible consequences to the mother and infant if these changes are not met?
In a laboratory experiment, nine equal negative point charges are placed symmetrically around the circumference of a circle of radius r. Calculate the magnitude of the electric field at the center of the circle.
A magnifying glass has a converging lens of focal length of 17.4 cm. At what distance from a nickel should you hold this lens to get an image with a magnification of +2.40?
When identical amounts of heat are supplied to each, the glass bar reaches a temperature of 92 °C, while the other bar reaches 268.0 °C. What is the specific heat capacity of the other substance?
A Cessna aircraft has a lift-off speed of 137 km/h. What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 219 m?
Answer the following questions using APA format 200 words or more for each question and be sure to cite references used in APA format. No plagerism is tolerated. Discuss the importance of the calculation and interpretation of ratios, to complete
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