03/02/23

The number of bacteria in a culture is increasing according to the law of exponential growth. After 3 hours, there are 100 bacteria, and after 6 hours, there are 800 bacteria.

The number of bacteria in a culture is increasing according to the law of exponential growth. After 3 hours, there are 100 bacteria, and after 6 hours, there are 800 bacteria. How many bacteria... more
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08/21/22

Physics 101 problem
The following formula estimates an average person’s lungcapacity V (in liters, where 1 L = 103 cm3): V = 4.1H - 0.018A - 2.7,where H and A are the person’s height (in meters) and age (in years),... more
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11/11/20

A uranium nucleus at rest undergoes fission and splits into two fragments, one heavy and one lighter. Which fragment has the greater magnitude momentum?
A) The heavy oneB) The lighter oneC) Both have the same momentumD) Impossible to sayWhy is C) the answer?
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11/11/20

Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line (in the description).
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11/10/20

physics universal gravitation
The planet Krypton has a mass of 4.1 × 1023 kg and radius of 4.4 × 106 m. What is the acceleration of an object in free fall near the surface of Krypton? The gravitational constant is 6.6726 ×... more
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11/10/20

Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10 meters above the ground.
Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10 meters above the ground. The baseball was released under the influence of gravity on Earth and... more
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11/10/20

using graph to find work done
(asked this question but the method didn't get me to the correct answer)The graph shows the x component of a force that acts on an object that moves on the x axis. The vertical spacing between... more
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10/09/20

Physic question
A 1.0-m long plank of wood is allowed to pivot around its center of mass, located exactly at the midpoint of the plank; the center of mass is fixed in place. A downward force is applied on one side... more
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10/09/20

Algebra II: Chemical Compounds
it would really help me if I knew the process to get the answer step by step.A beaker oh PH3 contains 372 grams of hydrogen. What is the total weight in the beaker? (P:31, H:1)
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10/08/20

Application problem
A contractor buys 18 yd of nylon carpet and 18 yd of wool carpet for $1800. A second purchase, at the same prices, includes 16 yd of nylon carpet and 23 yd of wool carpet for $1964. Find the cost... more
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09/18/20

One of the early communications satellites was Telstar, launched in 1962 and inspiring a popular song on the radio. It followed an elliptical orbit that varied from about 1000 to 6000 above Earth.
What was its orbital speed at its closest approach to Earth?
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