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melisa1 [442]
4 years ago
8

Two guy's masses have gained a velocity (not equal to zero) which means their momentum is now _____ .

Physics
2 answers:
olya-2409 [2.1K]4 years ago
7 0
Yes The Velocity will change
ioda4 years ago
4 0
Momentum is p=m•v
Where m = mass and v = velocity
Momentum is also a vector quantity whose direction is the same as velocity.

When mass or velocity increase, momentum increases.

When mass or velocity decreases, momentum decreases.
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A 57 kg person in a rollercoaster moving through the bottom of a curved track of radius 42.7 m feels a normal force of 995 N. Ho
natita [175]

Answer:

Use Fc centripetal force as positive and W the weight as negative

N = m v^2 / R + m g

v^2 = (N - m g) R / m

v^2 = (995 - 57 * 9.8) 42.7 / 57 = 327 m^2/s^2

v = 18.1 m/s

Note: N - m g is the net force producing the centripetal force

5 0
3 years ago
1. Calculate the total heat content of 10 kg of ice at -23°C.?
vesna_86 [32]

To solve the problem, we must know the heat capacity of ice and water.

For Cp = 2090 J/kg C

H = mCpT

H = (10 kg) ( 2090 J/ Kg C) ( -23 C)

H = - 480700 J

For water Cp = 4180 j/kg C

H = (100 kg) ( 4180 J/kg C) ( 60 C)

<span>H = 2508000 J</span>

8 0
3 years ago
The dielectric strength of rutile is 6.0 × 106 V/m, which corresponds to the maximum electric field that the dielectric can sust
VLD [36.1K]

Answer:

6.48*10⁻⁷ C

Explanation:

  • By definition, the capacitance of a capacitor is expressed as follows:

       C =\frac{Q}{V}

  • where Q is the charge on one of the plates of the capacitor, and V the potential difference between the plates.
  • The maximum electric field, the potential difference, and the distance between plates are related by the following expression:

        V = E_{max} * d

  • Replacing by the givens, we can find V as follows:

        V = 6.0e6 V/m * 0.00108 m= 6480 V

  • Now, we can find the maximum charge Qmax,  as follows:

        Q_{max} = C*V = 1e-10F* 6480 V = 6.48e-7 C

  • The maximum charge that the capacitor can hold is 6.48*10⁻⁷ C.
5 0
3 years ago
Read 2 more answers
HELP
sergiy2304 [10]

Answer:

Explanation:

a charged and uncharged object attratct eachother that is the answer your welcome

8 0
3 years ago
If two students push a box with a force of 3N in the same direction, and there is no other unbalanced force on the box, what is
FrozenT [24]
It’s 9N because unbalanced force on the box
6 0
3 years ago
Read 2 more answers
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