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vfiekz [6]
3 years ago
14

a ball at rest starts rolling down a hill with a constant acceleration of 3.2 meters/second2. what is the final velocity of the

ball after 6.0 seconds ​
Physics
1 answer:
Y_Kistochka [10]3 years ago
6 0

Answer:

3.2(6.0) = 19.2 m/s

Explanation:

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What is the voltage of A simple circuit with one battery​
yan [13]

Answer:

depends on the battery

7 0
3 years ago
The unit of electrical current is the ampere (A).
IrinaVladis [17]

Answer:

option B

Explanation:

Current unit is ampere (A)

Ampere will be equivalent to = ?

we know,

Current can be define as the charge per unit time

I = \dfrac{Q}{t}

unit of charge(Q) is coulomb which is equal to C.

unit of time(t) is equal to 's'.

now,

I = \dfrac{C}{s}

unit of I = C/s

ampere(A) is equivalent to C/s

The correct answer is option B

4 0
3 years ago
A man is traveling on a bicycle at 14 m/s along a straight road that runs parallel to some railroad tracks. He hears the whistle
deff fn [24]

Answer:

Explanation:

b ) The problem is based on Doppler's effect of sound

f = f₀ x (V - v₀) /( V+v_s)

f is apparent frequency ,f₀ is real frequency , V is velocity of sound , v₀ is velocity of observer going away  , v_s is velocity of source going away

778  = 840 x (340 - 14)/ (340 + v_s)

340 + v_s = 341.18

v_s = 1.18 m /s

it will go  away from   the observer or the cyclist.

speed of train = 1.18 m /s

a )

For a stationary observer v₀ = 0

f = f₀ x V  /( V+v_s)

= 840 x 340 / (340 + 1.180)

= 837 Hz

6 0
3 years ago
If the frequency of a wave is tripled, what happens to the period of the wave?
AveGali [126]

Answer:

if the frequency of the wave if tripled then period of wave gets tripled

5 0
3 years ago
Review please help.
iragen [17]

Answer:

1 and 3

Explanation:

because they are going up from 0

7 0
3 years ago
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