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ser-zykov [4K]
3 years ago
11

Hi can anyone help with my two questions posted a little while ago. I need to know ASAP :)

Physics
1 answer:
mihalych1998 [28]3 years ago
5 0
What's the questions !!
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2.6 sec (look it up) for more accurate
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miskamm [114]

  • Force, F = 15 N
  • Mass,m = 3 kg
  • Time taken, t = 5 sec
  • (v-u) =?

<u>As we know </u>–

\qquad\purple{\bf  \twoheadrightarrow  F = m a }

\qquad\bf \twoheadrightarrow  F = m \dfrac{ v-u}{t}

\qquad\sf  \twoheadrightarrow 15 = 3 \times  \dfrac{v-u}{5}

\qquad\sf  \twoheadrightarrow  3 \times  \dfrac{v-u}{5} = 15

\qquad\sf  \twoheadrightarrow  \dfrac{3}{5} \times (v-u) = 15

\qquad\sf  \twoheadrightarrow (v-u)= 15 \times \dfrac{5}{3}

\qquad\sf  \twoheadrightarrow  (v-u)= \cancel{15} \times \dfrac{5}{\cancel{3}}

\qquad\sf  \twoheadrightarrow  v-u = 5 \times 5

\qquad\purple{\bf  \twoheadrightarrow  v-u = 25 }

  • Henceforth, the change in the speed of the body is 25 m/s.
8 0
3 years ago
The Electric Potential Difference Created by Point Charges 13. Two point charges, +3.40 pC and -6.10 uC, are separated by 1.20 m
Alex Ar [27]

Answer:

- 91499.95 V

Explanation:

Let the mid point is P.

qA = 3.4 pC = 3.4 x 10^-12 C

qB = - 6.10 micro Coulomb = - 6.10 x 10^-6 C

AB = 1.20 m

AP = BP = 0.6 m

Let the potential at P due to the charge at A is VA and the potential at P due to the charge at B is VB.

The potential at P is V

V = VA + VB

V = \frac{Kq_{A}}{AP}+\frac{Kq_{B}}{BP}

V = \frac{9\times 10^{9}\times 3.4\times 10^{-12}}{0.6}-\frac{9\times 10^{9}\times 6.10\times 10^{-6}}{0.6}

V = 0.051 - 91500

V = - 91499.95 V

7 0
3 years ago
Observe: Up until now, all the problems you have solved have involved converting only one unit. However, some conversion problem
ipn [44]

Answer:

t is appropriate to clarify that units such as time and angles the transformation is not in base ten, for example:

        60 s = 1 min

        60 min = 1 h

        24 h = 1 day

Therefore, for this transformation, you must be more careful

the length transformation is base 10

Explanation:

In many exercises the units used are transformed by equations into other units called derivatives, in general the transformation of derived units is the product of the transformation of the constituent units.

In the example of velocity, the derivative unit is m / s, which is why it works in the same way that you transform length and time if in the equation it is multiplying it is multiplied and if it is dividing it is divided.

It is appropriate to clarify that units such as time and angles the transformation is not in base ten, for example:

        60 s = 1 min

        60 min = 1 h

        24 h = 1 day

Therefore, for this transformation, you must be more careful

the length transformation is base 10

      1000 m = 1 km

7 0
3 years ago
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