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The load across a 12-v battery consists of a series combination of three resistances are 15, 21, and 24 respectively.
1. Draw the circuit diagram
2. What is the total resistance of the load?
3. What is the magnitude of the circuit current?
A cannon with a mass of 115 kg shoots a cannonball with a mass of 8 kg. If the speed of the cannon ball as it leaves the cannon is 185 m/s,what is the speed of the cannon at that time??(assume cannon is initially at rest,not fastened down in any way,..
A free electron is placed between two large, parallel,nonconducting plates that are horizontal and 1.6 cm apart. One plate has a uniform positivecharge; the other has an equal amount of uniform negative charge.The force on the electron due to the ..
A high-speed lifting mechanism supports a 875-kg object with a steel cable that is 33.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
q1. chromium is produced by reacting its oxide with aluminium. if 354 g of cr2o3 and 158 g of al react to form 204 g of
A 1.0 kg book initially at rest falls from a height of 1.5 mto the floor. Use conversation of mechanical energy to show algebraically(no numbers other than 1/2) that the final speed of the bookdepends upon the change in gravitational potential ene..
A solid block of mass m2 = 0.5 , at rest on a horizontal frictionless surface, is linked to a relaxed spring (with spring constant k = 150 whose other end is fixed. Another solid block of mass m1 = 2.4 and speed v1 = 2.2 collides with the 0.50 blo..
A semi-trailer is coasting downhill along a mountain highway when its brakes fail. The driver pulls onto a runaway truck ramp that is inclined at an angle of 15.0° above the horizontal. What was the truck's initial speed
A loudspeaker of mass 25 {rm kg} is suspended a distance of h = 1.60 {rm m} below the ceiling by two cables that make equivalent angles with the ceiling. Each cable has a length of l = 3.50 {rm m}.
an object is placed 12.0 cm in front of the cornea. the cornea is thin ans has approximately parallel sides so that the
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 35 degree angle. The block's initial speed is 10 m/s. What vertical height does the block reach above its starting point
an object is pulled west along a horizontal frictionless surface with a steady horizontal force of 12.0 n. if the
a race car goes around a level circular track with a diameter of 1.00 km at a constant speed of 89 kmh. what is the
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