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A black guinea pig crossed with an albino guinea pig produce 12 black offspring. when the albino was crossed with a second black animal, 6 blacks and 6 albinos were obtained. what is the best explanat
A vertical straight wire carrying an upward 14 A current exerts an attractive force per unit length of 7.6x10^-4 N/m on a second parallel wire 6 cm away. What current magnitude flows in the second
A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 255 kg·m2 and is rotating at 8.0 rev/min about a frictionless vertical axle. Facing the axle, a 26.0 kg child hop
Acetylcholine acts at a G-protein-linked receptor on heart muscle to make the heart beat more slowly by the effect of the G protein on a K+ channel. Which one or more of the following would enhance th
The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 2.90 10-11 W/m2. What is the intensity delivered to the eardrum?
A 150-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 410 N. For the first 18 m the floor is frictionless, and for the next 18 m the coefficient of fricti
5 advantages and 5 disadvantages of abortion?
A 70 human sprinter can accelerate from rest to 12 in 3.5 . During the same interval, a 26 greyhound can accelerate from rest to 18 . Compute (a) the change in kinetic energy and (b) the average po
What is a plant hormone What is a plant hormone
Describe the processes of mitosis and meiosis
The pole's symmetry axis. The rope makes an angle of 70.0 degrees with respect to the vertical as shown. What is the tangential speed of the ball?
Using a highly sensitive parabolic sound collector, Sara records the frequency of a tuning fork as it drops into the Grand Canyon. She drops the vibrating tuning fork from rest at t=0. She records
A spring whose stiffness is 1140 N/m has a relaxed length of 0.56 m. If the length of the spring changes from 0.31 m to 0.78 m, what is the change in the potential energy of the spring?
The main foci (neurophysiological basis) of EEG, PET, and fMRI techniques.
Find the magnitude of the velocity vector and the angle it makes with the positive x-axis. Find the final position vector in component form at the end of 2 seconds.
How many grams of glucose are required to make 150 mL of a 0.2 M solution?
Baseball player of mass78.8 kg running at 6.97 m/s slides into home plate. a) what magnitude implusle is delivered to the player by friction? b) if the slide lasts 0.750 s, what average friction fo
A heating element of resistance (at its operating temperature) 243 Ω is connected to a battery of emf 479 V and unknown internal resistance . It is found that heat energy is being generated i
While going up the incline, the car has a constant deceleration of 0.850 in magnitude. What is the speed of the car at 12.0 on the incline?
Bob walks 200 south, then jogs 460 southwest, then walks 200 in a direction 27 east of north. Use either trigonometry or components to find the displacement that will return Bob to his starting poi
Describe the adaptation curve for slow adaptive Muscle receptor organ
An aluminum wire carrying a current of 9.0 A has a cross-sectional area of 9.0 10-6 m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3. (Assume three electr
Its angular velocity at the end of this time is 109. Find the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
Medical history elicits the facts that she lost her husband 6 months previously, has been extremely depressed, and is taking sleeping pills and not eating. What is the probability of disease
A 60kg ball of clay is thrown horizontally at 40 m/s toward a 1.6kg block sitting at rest on a frictionless hi surface. what impulse does the clay exert on the block?