4 years ago

What is terminal velocity?

1 answer:

3 0

the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

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If the velocity of a body varied uniformly from 10 m s-1 to 25 m s-1

BaLLatris [955]

Answer:

3m/s2

Explanation:

a = (v-u) / t

a = (25 - 10) / 5

a = 15 / 5

a = 3

4 0

2 years ago

The amplitude, or magnitude, of a sinusoidal source is the maximum value of the source. What is the amplitude of the voltage sou

liraira [26]

Answer:

A = 0.05 V

Explanation:

Sinusoidal Functions

A sinusoid or sinusoidal function is a sine or cosine which general equation is

$F(x)=A.sin(wt-\phi)$

Or also

$F(x)=A.cos(wt-\phi)$

Where A is the amplitude or maximum value, w is the angular frequency, t is the time and $\phi$ is the phase shift.

Comparing the given expression with the general formula

$v(t)=50cos(2000t-45^o) mV$

We can establish that A=50 mV = 0.05 V

$A = 0.05\ V$

7 0

3 years ago

A ball is thrown at an angle of 38° to the horizontal. What happens to the

finlep [7]

Answer:

Vy = V0 sin 38 where Vy is the initial vertical velocity

The ball will accelerate downwards (until it lands)

Note the signs involved if Vy is positive then g must be negative

The acceleration is constant until the ball lands

t (upwards) = (0 - Vy) / -g = Vy / g final velocity = 0

t(downwards = (-Vy - 0) / -g = Vy / g final velocity = -Vy

time upwards = time downwards (conservation laws)

8 0

3 years ago

Elements in Group VIIIA (also known as Group 18, or the noble gases) have

Sonbull [250]

The answer is C (the same number of valence electrons)

3 0

3 years ago

Look at the graph. If the price of peaches increases, what can be expected?

Fittoniya [83]

There will be less peaches soled

5 0

3 years ago

Read 2 more answers