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a 92-kg fullback, running at 5.0 m/s,attempts to dive directlyacross the goal line for a touchdown. Just as he reaches the line,he is met head-on in midair by two 75-kg linebackers both moving inthe direction opposite the fullback. one is moving at 2.0 m/s, theother at 4.0 m/s. they all become entangled into one mass.
a) what is their velocity after the collision?
b) does the fullback score?
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
question 1 a cart of mass 3.2 kg is moving with a velocity of 15.2 ms. it makes a head-on perfectly inelastic collision
A 43kg block of ice slides down the frictionless incline 1.50m long and 0.82m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed.
An emf source with a magnitude of = 120 , a resistor with a resistance of = 91.0 , compute the magnitude of the charge on each plate of the capacitor
A shower head has 30 circular openings, each with radius 1.0 mm. The shower head is connected to a pipe with radius 0.80 cm. If the speed of water in the pipe is 2.2 m/s, what is its speed as it exits the shower-head openings?
you have 15 m of wire a constant magnetic field of 0.35 t and a device that can rotate a coil at a fixed frequency of
A horizontal light ray is incident on a crown glass prism as shown in the figure below where ? = 42.5°. Find the angle of deviation ? of the ray-the angle
the pressure and temperature of steam entering an adiabatic turbine are 4000kPa and 400 degrees C, respectively. if the pressure and the temperature of the working fluid at the exit are 200kPa and150 degrees C
If the contact time between bat and ball is 2.80×10?3s , calculate the average force between the ball and bat during contact
The potential difference between two points in a wire 10 m apart is 12 V. When the current density is 4*10^7 A/m^2. find the resistivity of the material in the wire
A 2.90mW helium neon laser emits a visible laser beam with a wavelength of 635nm. How many photons are emitted per second
In the figure below, a “semi-infinite” nonconductingrod (that is, infinite in one direction only) has uniform linearcharge density λ = 5.0 μC/m.Find (a) the component of electric fieldparallel to the rod and (b) thecomponent perpendicular to the rod ..
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