3 years ago

Which of the following numbers is correctly represented by 4 x 10-7? 0.0000004 40,000,000 0.000004

Physics

1 answer:

creativ13 [48]3 years ago

5 0

0.0000004. since it is 10^-7 (note the negative), you would move thedecimal point 7 places to the left.

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Tasya [4]

Answer:1.04 N

Explanation:

Given

Gravitational Force on the Platter is $5 N$

Tray makes an angle of $\theta =12^{\circ}$

This gravitational Force has components along and Perpendicular to Platter

Perpendicular Force $W_p=W\cos \theta$

$W_p=5\times \cos 12=4.89 N$

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$W_{along}=W\sin \theta$

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Thus 1.04 N is the magnitude of force that will cause Platter to slide down

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3 years ago

Vector ⃑ has a magnitude of 9.0 m and points 40° east of north. Vector ሬ⃑ has a magnitude of 15.0 m and points 30° north of west

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Answer:

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Explanation:

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3 years ago

A dog walks 100m at a bearing of 175 degrees. a) How far did it walk East?

LUCKY_DIMON [66]

1 kilometer

Explanation:

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3 years ago

Water has a specific heat capacity nearly nine times that of iron. Suppose a 50-g pellet of iron at a temperature of 200∘C is dr

miv72 [106K]

Answer:

a. closer to 20∘C

Explanation:

$m_{p}$ = mass of pallet = 50 g = 0.050 kg

$c_{p}$ = specific heat of pallet = specific heat of iron

$T_{pi}$ = Initial temperature of pellet = 200 C

$m_{w}$ = mass of water = 50 g = 0.050 kg

$c_{w}$ = specific heat of water

$T_{wi}$ = Initial temperature of water = 20 C

$T_{e}$ = Final equilibrium temperature

Also given that

$c_{w} = 9 c_{p}$

Using conservation of energy

Energy gained by water = Energy lost by pellet

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hence the correct choice is

a. closer to 20∘C

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4 years ago

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Marizza181 [45]

Answer:

not sure but i think yes

Explanation:

sound waves

7 0

3 years ago

Read 2 more answers