Numerade

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How many atoms of hydrogen (H) are present in 200 molecules of ammonia ($NH_3$)?

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Question 10 (1 point) How many generations (rounded to the next whole generation) will it take for a lethal recessive allele to go from a frequency of 0.2 to a frequency of 0.01 in a random mating population (assuming nothing other than the recessive condition affects fitness)?

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A coil of resistance 1.5 kΩ and 0.25H inductance (in series) are connected in parallel with a variable capacitance across a 10V, 8 kHz resonance supply. Calculate (a) the capacitance of the capacitor when the supply current is a minimum, (b) the dynamic resistance and (c) the supply current.

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An object undergoes simple harmonic motion in two mutually perpendicular directions, with its two-dimensional position as a function of time given by the following vector equation: a. Show that this object remains a fixed distance from the origin, indicating that its path is circular (in other words, this object is undergoing circular motion), and express that distance in terms of the given variables in the problem. b. Determine an expression for the object’s velocity as a function of time, c. Show that the object’s speed remains constant, and express that speed in terms of the given variables in the problem. d. Express the angular speed of the object in its circular path in terms of the given variables in the problem

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A car accelerates at a rate of 4.05 m/s^2 [forward] over the course of a 395 m [forward] track, which takes 12.0 seconds. What was the car’s velocity at the start of the track? Bold text start(5 marks)Bold text End A train accelerates at a rate of 0.128 m/s^2 [forward] for 75.0 seconds from its starting velocity of 2.00 m/s [backward]. What is its final velocity? Bold text start(5 marks)Bold text End Starting at rest, a car takes 15.0 seconds to accelerate uniformly to 23.0 m/s [forward]. How far did it travel during this time? Bold text start(5 marks)Bold text End Starting at 23.0 m/s [E], a car accelerates uniformly to 46.0 m/s [E] while travelling 52.0 m [E]. What acceleration did it experience during this trip? Bold text start(5 marks)Bold text End A rock is dropped off a cliff and accelerates due to gravity. If the rock takes 18.63 seconds to reach the ground, how tall is the cliff? Bold text start(5 marks)Bold text End A cannon ball is launched horizontally off a cliff. If the cliff is 38.7 m high and the ball landed 465.0 m [west] away from the base of the cliff, what was the initial velocity of the ball? Bold text start(7 marks)Bold text End A group of physics students builds a catapult. They place it on the roof of a school, 18.0 m above the ground and launch a ball toward the east at 24.5 m/s [24\deg above horizontal]. When the ball hits the ground, how far away from the school will it be? Bold text start(7 marks)

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Sean used cross multiplication to correctly solve a rational equation. He found one valid solution and one extraneous solution. If 1 is the extraneous solution, which equation could he have solved?

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Fill in the blanks: Killmister argues that one problem with the group endorsement criterion for being an Aboriginal Australian is that it _(1)_ and might unfairly prevent members from having group rights, specifically _(2)_.

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Businesses in the United States use the H-1B visas to do which of the following? Multiple choice question. Allow citizens of the United States to fill specialist positions that require subject expertise Bring foreign workers to the United States to fill positions requiring special expertise Bring foreign workers to the United States to fill labor and assembly-line jobs Allow citizens of the United States to fill labor and assembly-line job positions

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Solve for $v$. $v - \frac{24}{v} = 2$ If there is more than one solution, separate them with commas. If there is no solution, click on \"No solution\".

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If you wanted to test whether the organism has cytochrome oxidase activity, you would perform the ________ test(s). A negative version of this test(s) would look like ______.

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wesley s.