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iris [78.8K]
3 years ago
6

A quantitative description of kinematics involves using __ to describe the motion

Physics
2 answers:
dybincka [34]3 years ago
6 0

position

i hope this helps you

have a great day


Lady_Fox [76]3 years ago
5 0

Answer : a quantitative description of kinematics involves using position , time velocity and acceleration to describe the motion.

Explanation : Kinematics are mostly concerned with the geometrically possible motion of an object without consideration of the force and mass involved.

it is used to describe the position of the object , their velocities, time and their acceleration.

we know the equations of motion.

v=u+at....(I)

s= ut+\dfrac{1}{2}at^{2}....(II)

v^{2}=u^{2}+2as....(III)

Where, v = velocity

t = time

a = acceleration

s = position , distance

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Answer:

Scale reading for no wind W'=60N

Explanation:

From the question we are told that

Area A= 2.0 m^2

Weight of board W=80

Velocity V=4.0m/s

Density of air \delta= 1.25 kg/m3 .

Generally the equation for pressure difference by Bernoulli equation is mathematically given by

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Generally force acting on the board by air is mathematically given by

F=\triangle PA

F=(10)2=>20N

Therefore

Scale reading for no wind W'

W'=W-F\\W'=80-20

W'=60N

Scale reading for no wind W'=60N

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A 2 kg object has a specific heat capacity of 1,700 J/(kg \cdot⋅oC)
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The amount of heat needed to raise the temperature of a 2kg object from 15°C to 25°C is 34000J.

HOW TO CALCULATE SPECIFIC HEAT CAPACITY:

  • The amount of heat absorbed by an object can be calculated by using the following expression:

  • Q = m.c.∆T

Where;

  1. Q = amount of heat absorbed or released (J)
  2. m = mass of object
  3. c = specific heat capacity (J/g°C)
  4. ∆T = change in temperature (°C)

  • According to this question, 2 kg object has a specific heat capacity of 1,700J/kg°C and was raised from a temperature of 15 Celsius to 25 Celsius. The heat absorbed is calculated as follows:

  • Q = 2 × 1700 × {25 - 15}

  • Q = 3400 × 10

  • Q = 34000J

  • Therefore, the amount of heat needed to raise the temperature of a 2kg object from 15°C to 25°C is 34000J.

Learn more about how to calculate heat absorbed at: brainly.com/question/11194034?referrer=searchResults

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