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Sergio [31]
3 years ago
9

Calculate the change in the kinetic energy (KE) of the bottle when the mass is increased. Use the formula KE = mv2, where m is t

he mass and v is the speed (velocity). Assume that the speed of the soda bottle falling from a height of 0.8 m will be 4 m/s, and use this speed for each calculation. Record your calculations in Table A of your Student Guide. When the mass of the bottle is 0.125 kg, the KE is kg m2/s2. When the mass of the bottle is 0.250 kg, the KE is kg m2/s2. When the mass of the bottle is 0.375 kg, the KE is kg m2/s2. When the mass of the bottle is 0.500 kg, the KE is kg m2/s2.
Physics
2 answers:
DerKrebs [107]3 years ago
9 0

Answer:

1,2,3,4 on edg

Explanation:

Aliun [14]3 years ago
6 0

kinetic energy is given as

KE = (0.5) m v²

given that : v = speed of the bottle in each case =  4 m/s

when m = 0.125 kg

KE = (0.5) m v² =  (0.5) (0.125) (4)² = 1 J

when m = 0.250 kg

KE = (0.5) m v² =  (0.5) (0.250) (4)² = 2 J

when m = 0.375 kg

KE = (0.5) m v² =  (0.5) (0.375) (4)² = 3 J

when m = 0.0.500 kg

KE = (0.5) m v² =  (0.5) (0.500) (4)² = 4 J

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Keith_Richards [23]

Answer Part A: radiation

Part B: conduction

Part C: conduction

Part D: conduction

Part E: conduction

Part F: radiation

Part G::radiation

Part H : convection

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Convection is through molecules or particles of water or air current

Radiation is heat transfer through empty space .

8 0
4 years ago
A metal sphere, X, has an initial net charge of −6 × 10−6 coulomb and an identical sphere, Y, has an initial net charge of +2 ×
STatiana [176]
When the two spheres touch each other, part of the charge recombine together. The part of charge that recombines is the excess of positive charge on sphere Y, Q_y = +2 \cdot 10^{-6}C, that recombines with an equivalent charge of -2 \cdot 10^{-6}C located on sphere X. As a result, the total charge remained on the two spheres is the excess of negative charge remained on sphere X:
Q=-4 \cdot 10^{-6}C
Since the two spheres are identical, they have same capacity, so this charge will now redistribute equally on the two spheres: therefore, at the end, each sphere will have
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8 0
3 years ago
What is the average speed of an object that travels 400 meters in 80 seconds?
AnnyKZ [126]

Answer:

<h2>5 m/s</h2>

Explanation:

The average speed of the object can be found by using the formula

v =  \frac{d}{t}  \\

d is the distance

t is the time taken

From the question we have

v =  \frac{400}{80}  =  \frac{40}{8}  \\

We have the final answer as

<h3>5 m/s</h3>

Hope this helps you

4 0
3 years ago
7. A 1300 kg car starts at rest and rolls down a hill from a height of 10.0 m. It then moves across a level (frictionless) surfa
makkiz [27]

Answer:

0.505 m

Explanation:

From the question,

The kinetic energy of the car = energy stored in the spring

1/2mv² = 1/2ke²...................... Equation 1

Where m = mass of the car, v = velocity of the car, k = spring constant of the car, e = extension/compression

make e the subject of the equation

e = v√(m/k)............... Equation 2

We can calculate the value of v, by applying,

v² = u²+2gH...................... Equation 3

Where u = initial velocity of the car, H = height of the car, g = acceleration due to gravity.

Given: u = 0 m/s (from rest), H, 10 m, g = 9.8 m/s²

Substitute into equation 2

v² = 2(10×9.8)

v² = 196

v = √196

v = 14 m/s

Also given: m = 1300 kg, e = 1.0×10⁶ N/m =1000000 N/m

Substitute into equation 2

e = 14√(1300/1000000)

e = 14√(0.00013)

e = 14(0.036)

e = 0.505 m

Hence the maximum distance of the spring is compressed = 0.505 m

5 0
3 years ago
What is meant by significant figures of a measurement ?
juin [17]

Answer:

The number of digits used to express a measured or calculated quantity. By using significant figures, we can show how precise a number is

Explanation:

6 0
3 years ago
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