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A beam of particles is directed at a 0.015-kg tumor. There are 1.3 × 1010 particles per second reaching the tumor, Find the biologically equivalent dose given to the tumor in 21 s
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 14.9 N. compute the volume of the object
Determine the image distance for an object do=7.900 cm from a diverging lens of radius of curvature 6.320 cm and index of refraction 1.800.
The 20-cm-long wrench in the figure swings on its hook with a period of 0.74s, What is the wrench's moment of inertia about the hook
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 5.20cm left of the equilibrium position, calculate the phase constant
A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground and bounces. What is the change of the ball's momentum during the bounce
A 5 kg block, measuring 10 cm per side, is held 50% submerged in water by a helium balloon. what is the diameter of the balloon
A second baseman tosses the ball to the first baseman, who catches it at the same level from which it was thrown. How long is the ball in the air
A motorcycle is travelling at a constant velocity of 30ms. The motor is in high gear and emits a hum of 700Hz. find the period of the sound waves emitted from the motorcycle
The measured conductivity of Cu at Room Temperature is 5.88 x 107/ohm.m and the Fermi energy for Cu is 7.03 eV, Find the mean free path( mfp) of electrons in copper
A satellite strikes the International Space Station traveling at a speed of 14.70 miles/ Second relative to the station. calculate the energy released by the collision
If a stream of N2O is passed through a tube 30mm in diameter and 25cm long at a flow rate of 0.7L/min, at what temperature should the tube be maintained to have a partial pressure of 1.0mm of O2 in
A 71-kg skier is going down a slope oriented 32° above the horizontal. Determine the pressure that each skier exerts on the snow
at what temperature should the tube be maintained to have a partial pressure of 1.0mm of O2 in the exit gas? Assume that the total pressure of the gas in the tube is 1.30atm.
A 40.00-W eletric motor is able to accelerate a 8755 g car from rest to 30.00 mph in 31.10 seconds. Calculate the efficiency of the motor
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the total vector displacement
Calculate the density of a solution if the following data has been recorded during a lab experiment
A soccer player kicks a rock horizontally off a 34.0-m-high cliff into a pool of water. what was the initial speed given to the rock
Fusion reactors attempt to utilize the same nuclear reaction that occurs within the sun. Two deuterium nuclei will combine together to form helium if they are close enough, How fast must the deuteri
Describe what happen to the density of liquid water when its temperature is increased and/or decreased. properly cite your reference source(s) for this information
A 45cm3 block of iron is removed from an 800?Cfurnace and immediately dropped into 200 mL of 20?C water. What fraction of the water boils away
The position of an object connected to a spring varies with time according to the expression x = (4.8 cm) sin(9.3 ?t). Find the amplitude of the motion
Explain and calculate the mass of solution in a pipette if the following data has been recorded during a lab experiment
If the weight of the gas in the bulb is 0.3554 g, what is the mole percent of butane in the mixture. Set up two equations to solve simultaneously for the two unknowns, the moles of ethane and butane
A long pipe of outer radius 3.60 cm and inner radius 3.06 cm carries a uniform charge density of 3.22 mC/m3. calculate the electric field r = 7.56 cm from the centerline of the pipe