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A charge (uniform linear density = 9.4 nC/m) lies on a string that is stretched along an x axis from x = 0 to x = 3.0 m. Determine the magnitude of the electric field at x = 5.0 m on the x axis.
Assume the steel in the body of an automobile has an emissivity of 0.3 and a specific heat of 450 J/Kg-degree C. What temperature will the top of the hood reach
The closest star to our solar system is Alpha Centauri, which is 4.30 light years away. How much time would elapse on a clock on the Earth
What mass can it support in water before sinking. Two concentric spherical shells with uniformly distributed masses M1 = kg and M2 = kg are situated as shown . Find out the magnitude Find the magnitude of the net gravitational force on a particle ..
a dogs hair has been cut and is now getting 1.04 mm longer each day. with winter coming on this rate of hair growth is
Calculate the thickness of the layer between the 1000- and 500mb pressure surfaces (a) at a point in the tropics where the mean virtual temp of the layer is 9C and (b) at a point in the polar regions
A venturi meter is a device for measuring the speed of a fluid within a pipe. A gas flowing at a speed v2 through a horizontal section of pipe whose cross-sectional area A2 = 0.0700 m2. The gas has a density of ? = 1.20 kg/m3.
A heat engine operates in a Carnot cycle between72.0°C and345°C. It absorbs21,600J of energy per cycle from the hot reservoir. How much energy does it expel in each cycle by heat
A model rocket is launched from rest with an upward acceleration of 6.00 m/s^2 and, due to a strong wind, a horizontal acceleration of 1.50 m/s^2. How far is the rocket from the launch pad 6.00s later when the rocket engine runs out of fuel?
A disk of radius R = 11 cm is pulled along a frictionless surface with a force of F = 16 N by a string wrapped around the edge. what is the torque exerted about the center of the disk
A mass-spring system with 0.250kg undergoes simple harmonic motion with period 0.52 seconds. When an additional mass (delta M) is added, the period increases by 21%. A) Find delta M. Express your answer to two significant figures and include the appr..
A converging lens (f = 14.6 cm) is located 31.4 cm to the left of a diverging lens (f = -7.91 cm), Find the overall magnification
What is the net upward force on an airplane wing of area 20.7 m2 if the speed of air flow is 232 m/s across the top of the wing and 215 m/s across the bottom? (The density of air where the airplane flies is ρair = 1.21 kg/m3.)
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