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A kangaroo jumps at an angle of 80° above the horizontal with a velocity of 15 m/s. If the mass of the kangaroo is 75 kg, what is its momentum in the vertical direction?
a transformer has N^1 =350 turns and N^2 =2000 turns. what voltage is developed across the secondary coil?
A box slides down a 25° ramp with an acceleration of 1.070m/s2. Resolve the coefficient of kinetic friction between box and ramp.
The absolute uncertainty written in the form
A 45-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 25 degrees , At what angle does the crate begin to slide
Calculate the x-component of vector. A uniform electric field of magnitude 375 N/C pointing in the positive x-direction acts on an electron, which is initially at rest.
An RLC circuit has a resistance of 2 komega, a capacitance of 32 uF, and an inductance of 52 H. obtain the phase shift between the current and the voltage
The current in a solenoid is increasing at a rate of 6.37 A/s. The cross-sectional area of the solenoid is ? cm^2, and there are 333 turns on its 11.5 cm length. What is the induced emf opposing the increasing current
A 270 ball and a 520 ball are linked by a 50.0-cm-long massless, rigid rod. The structure rotates about its center of mass at 120 rpm. What is its rotational kinetic energy.
A positive charge Q1 = 3.00 µC is in the origin and a negative charge Q2 = -5.00 µC is at point x = 11m. Find the position of point P between the charges, where the electric potential equals zero.
A 3.0cm tall object is 50cm in front of a convex mirror that has a -20 cm focal length. Calculate the image position in cm behind the mirror
A converging lens has 31.3 cm focal length, and is placed 20.9 cm behind a diverging lens. Parallel light strikes the diverging lens, What is the focal length of the diverging lens in cm
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 25.2°. Find the dispersion of the slab
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