3 years ago

For two variables in a direct proportion, what is the result of doubling one variable?

1 answer:

7 0

If two variables are in direct proportion, doubling one variable means the other should also be doubled because the two variables increase at the same rate.

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Sound waves with a constant frequency of 250 hertz are traveling through air at stp. what is the wavelength of the sound waves

Deffense [45]

Answer:

wave length is 1.2m

Explanation:

since formula of wave length is v/f

v(speed of sound in air at stp is 300ms^-1)

f(frequency 250hertz)

then wave length is 300÷250 which give 1.2m

5 0

2 years ago

A basketball with a mass of 20 kg is accelerated with a force of 10 N. If resisting forces are ignored, what is the acceleration

kupik [55]

I’m pretty sure it would be 10/20= 0.5m/s2

7 0

3 years ago

A clinical psychologist is one type of pure basic research psychologist . True are false

adoni [48]

false. clinical deals with patients and treats the.

research looks at root causes which clinical applies

8 0

3 years ago

A car traveling at 22.4 m/s skids to a stop in 2.55s determine the skidding distance of the car ?

nlexa [21]

8.8 miles. You divide 22.4 & 2.55.

8 0

3 years ago

An 80.0-kg object is falling and experiences a drag force due to air resistance. The magnitude of this drag force depends on its

Zinaida [17]

Answer:

Terminal velocity of object = 12.58 m/s

Explanation:

We know that the terminal velocity is attained when drag force and gravitational force are of the same magnitude.

Gravitational force = mg = 80 * 9.8 = 784 N

Drag force = $12.0v+4.00v^2$

Equating both, we have

$784=12.0v+4.00v^2\\ \\ v^2+3v-196=0\\ \\ (v-12.58)(v+15.58)=0$

So v = 12.58 m/s or v = -15.58 m/s ( not possible)

So terminal velocity of object = 12.58 m/s

3 0

3 years ago