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The student is conducting a nutrition experiment using lab rats. One group (control group) is fed a normal diet, while the other group (experimental group) is fed a diet high in protein. There were 30 rats total used in the experiment. At the end of the experiment, the average mass (weight) of a rat in the control group was 60.4 g while the average mass (weight) of a rat in the experimental group was 0.0689 kg. What is the average difference in weight between the two groups in grams?
Find the mechanical energy of a block- spring system having a spring constant of 1.3 N/cm and an oscillation amplitude of 2.4 cm.
A satellite is circling the earth at 7.26 x 10^6 m with speed 7400 m/s. What is the speed of the second satellite
a certain 4.8-volt cellular telephone battery has a capacity of 600 mah. one mah equals 3.6 coulombs. when the batterys
A triple threaded worm has teeth of 8 mm module and pitch circle diameter of 60 mm. if the worm has 30 teeth of and the coefficient of friction of the worm gearing is 0.057, find Efficiency of the worm gearing
a curve of radius 139 m is banked at an angle of 9deg. an 758-kg car negotiates the curve at 77 kmh without skidding.
A converging lens (f = 14.6 cm) is located 31.4 cm to the left of a diverging lens (f = -7.91 cm), Find the overall magnification
A projectile is launched with an initial speed of40.0 m/s at an angle of 35.0° above the horizontal. What is the projectile's velocity at the highest point of its trajectory
q1. a bird lands on a bare copper wire carrying a current of 23 a. the wire is 8 gauges which means that its
A semitrailer is coasting downhill along a mountain highway when its brakes fail. What was the truck's initial speed
A pulley rotating in the counterclockwise direction is attached toa mass suspended from a string. The mass causes the pulley'sangular velocity to decrease with a constant angular accelerationα = -2.1 rad/s2.
Marta flies past you at 78% of the speed of light, traveling in a spaceship that would measure 50 meters from end to end if it were at rest in your reference frame. If you measure the length of her spaceship as it goes by, how long will it be from ..
a circus clown weighing 170 lbs. is fired from a cannon at 50 degrees above the horizontal. The clown lands in a circular net that has a radius of 15 ft. What was the initial velocity of the clown
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