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imagine your car is powered by a fusion engine in which the following reaction occurs 31h2 ----gt2he4 1h1 0n1 the
a disk with mass m 60 kg and radius r 041 m hangs from a rope attached to the ceiling the disk spins on its axis at a
a 150-g aluminum cup contains 900 g of water in thermal equilibrium with the cup at 85degc the combination of cup and
if a block of wood floating on a pool of water has a volume of 37 cm3 and displaces a volume of water of 30 cm3 what is
a neutron causes the element 88x232 to change according to the reaction 0n1 88x232 ----gtzya identify the a atomic
on the planet newtonia a simple pendulum having a bob with a mass of 125kg and a length of 1884cm takes 155s when
one kilogram of dry air at stp conditions is exposed to 100 r of x-rays one roentgen is defined by equation 321 in
birds resting on high-voltage power lines are a common sight the copper wire on which a bird stands is 22 cm in
an ac generator supplies an rms voltage of 220 v at 600 hz it is connected in series with a 0520 h inductor a 350 f
a 500-g sample of a conducting material is all that is available the resistivity of the material is measured to be
a length of wire has a radius of 300 times 10 -3 m and a resistance of 0200 when the potential difference across the
a pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner each
suppose that a parallel-plate capacitor has circular plates with radius r 400 mm and a plate separation of 40 mm
if the total momentum of a system is a constant then we say that the total momentum is conserved a consequence of
a 460 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides
an electron in an atom has an orbital angular momentum with ml 0 what is the component morbz js what is the component
a solid spherical ball of mass 274 kg and radius 015 m rolls along a smooth level surface with a speed of 2 ms the ball
suppose a neutrino is created and has an energy of 490 mev a assuming the neutrino like the photon has no mass and
a sign weighing 498 n is suspended at the end of a uniform rod 404 m long weighing 663 n as shown below what is the
to strengthen his arm and chest muscles an 750 kg athlete 200 m tall is doing a series of push-ups as shown in the
a screen is placed 184 m behind a single slit the central maximum in the resulting diffraction pattern on the screen is
after landing on an unfamiliar planet a space explorer constructs a simple pendulum of length 520 cm the explorer
light with a wavelength of 634 nm passes through a slit 768 microm wide and falls on a screen 185 m away find the
one end of an insulated metal rod is maintained at 100 degrees c while the other end is maintained at 0 c by an
an ideal massless spring is hanging vertically when a 075-kg mass is attached to the spring the spring stretches by 42