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You are preparing for a 5-day backpacking trip where you plan to use a gasoline cook stove for about 30 min each morning and night. The description of your cook stove brags that the stove can warm 1 L of water to boiling in about 12 min.
(a) Estimate the minimum amount of gasoline you should take on your trip.
(b) Explain why the assumptions you made in your calculation for part a mean that the amount of gas you actually need will probably be somewhat larger.
An electric motor rotating a workshop grinding wheel at a rate of 9.80x10^1 rev/min is switched off. how long does it take for the grinding wheel to stop
After the ambulance passes, the observed frequency of the siren is 493 Hz. Conclude the ambulance's speeds from these observations.
A 1350 kg car accelerates uniformly from 35.5 km/h to 75.5 km/h over 250 m. Determine the time taken for the car to accelerate
A 1.6-m-long string fixed at both ends vibrates at resonant frequencies of 720 Hz and 960 Hz, When the tension in the string is 1162 N, what is the total mass of the string
A 50 kg person stands at the edge of a 7.4 m diameter circular platform, What is the magnitude of the speed of the person (in m/s) with respect to the ground
three 0.04 kg particles have been glued to a rod of length L = 13 cm and negligible mass and can rotate around a perpendicular axis through point O at one end. How much work is required to change the rotational rate
A vertically positioned charged disk of radius R contains a unfirom positive charge density sigma. Find the expression for the angle theta made between the disk edge and the length L
The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and supported from below at an angle ?= 36o by a brace that is attached to a pin. Find the magnitudes of these three forces
What is the velocity of q_{2} when the balls are 0.450 m apart. what is the speed that the bar falls.
An electron is located on a pinpoint having a diameter of 2.5 um. What is the minimum uncertainty in the speed of the electron
A bullet of mass 30 g collides completely inelastically with a ballistic pendulum of mass 2.5 kg. Calculate the velocity of the bullet right before it collides with the pendulum
An electric vehicle starts from rest and accelerates at a rate of 1.7 m/s2 in a straight line until it reaches a speed of 27 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 until it stops. (a) How much time elapses from start to stop? (..
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