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3 years ago

Calculating Velocity

Physics

1 answer:

m_a_m_a [10]3 years ago

5 0

The average velocity of the object represented by the distance time graph is $0.1\:meter\:per\:second$

The velocity of an object is the change in the distance moved by an object with time.

This could also be related to the rate of change or slope of the graph.

Average velocity = $\frac{change\:in\:distance}{change\:in\:time}$

Average velocity = $\frac{(5-0)}{(50-0}) = \frac{5}{50}=0.1\:meter\:per\:second$

Therefore, the average velocity of the object is $0.1\:meter\:per\:second$

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28. (a) A pendulum that has a period of 3.00000 s and that is located where the acceleration due to gravity is 9.79m/s2 is moved

Lina20 [59]

Answer:

See below ↓

Explanation:

Assuming the motion of a simple pendulum, the time period is given by

⇒ T = 2π√(L/g)
⇒ T₁/T₂ = √(g₂/g₁)

The values we have

T₁ = 3 s
g₁ = 9.79 m/s²
g₂ = 9.82 m/s²

Solving

T₂ = T₁/√(g₂/g₁)
T₂ = 3/√(9.82/9.79)
T₂ = 3.004593 seconds

This many digits are needed because the acceleration is changed by a very small percentage (roughly 2 decimal places)
So on taking the square root of the ratio of the gravity due to acceleration (2 values), 4 decimal places will be present at the very least

7 0

2 years ago

The voltage between two parallel plates separated by a distance of 3.0 cm is 120 v. the electric field between the plates is:___

soldier1979 [14.2K]

The electric field between two plates is 40 V/m.

To find the electric field between two plates, the values are given are,

distance = 3 cm

Voltage v = 120 v

<h3>What is electric field between two plates?</h3>

The electric field between plates is the area where the charges between two plates, influences can be seen. For example, if a charged particle is placed near any charged plate, the plate exerts an electric force to attract or repel the charged particle.

Formula is given as,

E = V / d (v/m)

Substituting the given values,

= 120 /3

=40 v/m

Hence, the answer is 40 v/m.

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4 0

2 years ago

When the plutonium bomb was tested in New Mexico in 1945, approximately 1 gram of matter was converted into energy. Suppose anot

Softa [21]

Answer:

$1.08 * 10^{14} J$

Explanation:

Energy and mass are related by the famous equation developed by Albert Einstein:

$E = mc^2$

where m = mass and c = speed of light

This equation explains that an object with very small mass can produce a large amount of energy in reactions such as a nuclear reaction.

Hence, the energy produced by the explosion of a Plutonium bomb containing 3.6 grams of matter is:

$E = 3.6 * 10^{-3} * (3 * 10^8)^2$

E = $1.08 * 10^{14} J$

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3 years ago

How do sports play a role in American Culture? Is this different from how sports play a role in other cultures?

Nikolay [14]

Answer: American sports culture has a much greater appreciation of and emphasis towards collegiate and high school sports. This may be the strongest difference between American sports culture and every other countries' sports culture.

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3 years ago

To study the properties of various particles, you can accelerate the particles with electric fields. A positron is a particle wi

abruzzese [7]

Answer:

(a) 5.73 * 10¹³ m/s²

(b) 4.99 * 10⁵ m/s

Explanation:

(a) We know that Electrical force is the product of electric charge and electric field:

F = qE

We also know that Force is the product of mass and acceleration:

F = ma

Therefore, equating both of them:

ma = qE

Acceleration, a, will be:

a = (qE) / m

Electric charge of a positron = 1.602 * 10^(-19) C

Mass of a positron = 9.11 * 10^(-31) kg

Acceleration will be:

a = (1.602 * 10^(-19)) * 9.11 * 10^(-31)) / 326

a = 5.73 * 10¹³ m/s²

(b) Acceleration is the time rate of change of velocity. It is given as:

a = v/t

Velocity, v, will then be:

v = a * t

Time, t = 8.7 * 10^(-9) s

Therefore, velocity will be:

v = 5.73 * 10^(13) * 8.7 * 10^(-9)

v = 49.85 * 10⁴ m/s = 4.99 * 10⁵ m/s

7 0

3 years ago