Answer:
t = Δa / v
Explanation:
To know which option is not true, we shall fine a relationship between acceleration (a), velocity (v), time (t) and radius (r). This is illustrated below:
Acceleration can simply be defined as the rate of change of velocity with time. Mathematically, it is expressed as shown below:
Acceleration = change in velocity / time
a = Δv / t ..... (1)
But
Δv = v₂ – v₁
Substitute the value of Δv into equation (1)
a = Δv / t
a = v₂ – v₁ / t ....... (2)
From equation (1), make Δv the subject of the equation.
a = Δv / t
Cross multiply
Δv = at .... (3)
From equation (1), make t the subject of the equation.
a = Δv / t
Cross multiply
at = Δv
Divide both side by a
t = Δv /a ...... (4)
From circular motion, centripetal's force is given by:
F = mv²/r
F = ma꜀
Therefore,
ma꜀ = mv²/r
Cancel out m
a꜀ = v²/r
SUMMARY:
a = Δv / t
a = v₂ – v₁ / t
Δv = at
t = Δv /a
a꜀ = v²/r
Considering the options given in question above, t = Δa / v is not a true statement.
Answer:
Correct answer: P = 38,793.1 W = 38.7 kW
Explanation:
Power is calculated according to the following formula:
P = A / t
where A is the work performed and t the elapsed time
work is a measure of changing energy
A = ΔEp = m · g · h we will take that g = 10 m/s
A = 4,500 · 10 · 25 = 1,125,000 J
P = 1,125,000 / 29 = 38,793.1 W = 38.7 kW
P = 38,793.1 W = 38.7 kW
God is with you!!!
“Specific Hazards Arising from the Material: Flammable in the form of dust when exposed to heat, sparks or flame. May react with water under fire conditions to liberate flammable hydrogen gas. May emit fumes of scandium oxide under fire conditions.”
Hopefully this gave you some background information. - j:)
A planet orbiting a star in a eclipse and sometimes it is closer to the star but sometimes it is farther. When it is closer the gravity on the planet from the star is stronger and it speeds up. The area the planet sweeps over is equal because when it speeds up the length covered along the orbital path is greater, but it is also closer to the star, and that dimension is decreased.
Operating capital - Operating capital refers to that amount of cash required to run day to day working or operation of business .
Total Operating Capital = Total assets (short term + long term) - current liabilities
total assets include inventories, accounts receivable , fixed assets etc.
current liabilities include account payables, accrued expenses, income tax accrued interest etc.
NOWC means net operating working capital it is difference between current assets and non interest bearing current liabilities
Current assets include cash accounts receivable and inventories and exclude marketable securities
Non interest bearing current liabilities means amount of money company must pay within a year without own interest.
To know more about operating capital :
brainly.com/question/13286080
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