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son4ous [18]
3 years ago
6

A golf club hits a 0.0459 kg golf ball

Physics
1 answer:
anastassius [24]3 years ago
8 0

Answer:

2.933 kg m/s

Explanation:

impulse = change in momentum

impulse = mass ( final velocity - initial velocity )

              = 0.0459 ( 63.9 - 0 )

               = 0.0459 × 63.9

                = 2.93301 kg m/s

or              = 2.933 kg m/s up to 4 significant figures

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When are magnets attracted and when are they repelled.
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A copper rod of cross-sectional area 11.6 cm2 has one end immersed in boiling water and the other in an ice-water mixture, which
julia-pushkina [17]

Answer:

0.686 g of ice melts each second.

Solution:

As per the question:

Cross-sectional Area of the Copper Rod, A = 11.6\ cm^{2} = 11.6\times 10^{- 4}\ m^{2}

Length of the rod, L = 19.6 cm = 0.196 m

Thermal conductivity of Copper, K = 390\ W/m.^{\circ}C

Conduction of heat from the rod per second is given by:

q = \frac{KA\Delta T}{L}

where

\Delta T = 100^{\circ} - 0^{\circ} = 100^{\circ}C = temperature difference between the two ends of the rod.

Thus

q = \frac{390\times 11.6\times 10^{- 4}\times 100}{0.196} = 228.48\ J/s

Now,

To calculate the mass, M of the ice melted per sec:

M = \frac{q}{L_{w}}

where

L_{w} = Latent heat of fusion of water = 333 kJ/kg

M = \frac{228.48}{333\times 10^{3}} = 6.86\times 10^{- 4}\ kg = 0.686\ g

5 0
3 years ago
What was your train of thought as you navigated the picture of the candle?
defon

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WHERE IS THE PICTURE

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HEY CAN YALL PLS HELP ME IN DIS!!!!!!!!!!!!!
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Answer:

Hey!!

Your answer is: 0.72

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