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sergiy2304 [10]
3 years ago
9

Selina drops a golf ball down a deep well. The ball falls with only the force of gravity acting on it. Without any air resistanc

e, as the golf ball falls into the well, its speed is:
A. constant
B. increasing
C. decreasing
D. directional
Chemistry
1 answer:
ss7ja [257]3 years ago
8 0

<u>Answer:</u>    A. constant

Without any air resistance, as the golf ball falls into the well, its speed is constant.

<u>Explanation:</u>

Given that when the ball is released,<em>there is no air resistance acting on ball. So the ball is freely falling. </em>

The only force acting on the freely falling body is the gravitational force pulling the body towards the centre of the earth.Here the only acceleration acting on the body is the <em>acceleration due to gravity.</em>

The acceleration due to gravity is 9.8 m/s^2. so through out the journey of the ball,the acceleration is 9.8 m/s^2. <em>So as the acceleration is constant, the speed is also constant.</em>

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C14H30 because of the formula for alkanes:
CnC2n+2
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3 years ago
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A uniform cylinder of mass 4.3 kg and radius 0.4 m rolls down a ramp inclined at an angle 0.15 radians to the horizontal. what i
tester [92]

The cylinder's acceleration is

a=\frac{gsin}{1+\frac{I}{mrL} }

= 2g\frac{sin}{3}θ

= \frac{2(9.8) sin (0.15 rad)}{3} \\=0.9763 \frac{m}{sec r}

<h3>How do you determine a cylinder's acceleration?</h3>

The cylinder's complete radius, R, from the center marks the contact point, therefore the torque created by friction is given by fR = I\alpha, where is the rotating acceleration. This rotational acceleration's corresponding linear acceleration, \alpha, is equal to R. The cylinder, which has its mass concentrated in its center, triumphs in the competition, followed by the disc and the hoop, with their respective final velocities being roughly 1.4:1.2:1. We can also see that our findings are unaffected by the cylinders' masses.

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5 0
2 years ago
What is the electron configuration of beryllium?
Vlad1618 [11]
Here is your answer:

The amount of electrons that the element Beryllium has is: 4

Reason:

Beryllium atomic number is 4

Therefore the amount of protons and electrons Beryllium has is 4

Your answer is 5.

Hope this helps.
8 0
4 years ago
Patient added a 17-g measured dose of polyethylene glycol 3350 (MIRALAX) to 180 mL of water to use as a laxative. If the volume
Sergio [31]

Answer: Apparent density of ethylene glycol 3350 = 17g/15.6mL= 1.09g/mL

Specific gravity of mixture = 1.01

Explanation:

The specific gravity of an object or substance is the ratio of the density of that object or substance to that of a reference substance usually water.

<em>Specific gravity = density of substance/density of water</em>

The density of a substance is the ratio of the mass of that substance to is volume.

<em>Density = Mass/volume</em>

Density of water 1.00 g/mL,  

Apparent density of ethylene glycol 3350 = mass/volume

volume of ethylene glycol = volume of mixture - volume of water

volume of ethylene glycol = 195.6 - 180) = 15.6mL

Apparent density of ethylene glycol 3350 = 17g/15.6mL= 1.09g/mL

<em>mass of water =  density of water * volume of water</em>

mass of water = 1.00g/mL * 180mL = 180 g

Mass of solution = mass of substance + mass of water = (17 + 180)g = 197g

Density of mixture = mass of mixture / volume of mixture

Density of mixture = 197 g / 195.6 mL = 1.01 g/mL

specific gravity of mixture = density of mixture / density of water

specific gravity of mixture = 1.01g/mL / 1.00g/mL

specific gravity of mixture = 1.01

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4 years ago
Differentiate between sandy soil, clayey soil and loamy soil on the basis of the growth of plants????
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The mixture of rock particle sand humus is called the soil.
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