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4 years ago

11

Which volcanic hazard can block the sunlight and temporarily cool the Earth’s surface?

1 answer:

marissa [1.9K]4 years ago

4 0

Pretty sure its volcanic ash or magma, hope this helps

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A string is strung horizontally with a fixed tension. A wave of frequency 90 Hz is sent along the string, and it has a wave spee

ankoles [38]

Answer:

wave speed of the second wave 55.1 m/s

Explanation:

The wave speed of the second wave will going to be same i.e 55.1 m/s. As speed of wave is dependent on the medium and here in this case medium is remain same for second wave also i.e string only, no change in the medium noticed, therefore speed of second wave still remain same i.e 55.1 m/s.

6 0

3 years ago

What is the weight of a ring tailed lemur that has a mass of 10 kg? Use w = mg (g = -9.8 m/s2)

Nana76 [90]

The correct answer was

98N

For Newtons 3rd Law Quiz K-12

6 0

4 years ago

Read 2 more answers

Plzzzz urgent <br><br><br>solve this

Mariana [72]

Answer:

$\large{ \tt{☄ \: EXPLANATION}} :$

Before solving , You'll have to know - When an object starts from the state of rest , in this case , initial velocity ( u ) = 0

Notice that we're provided the time ( t ) in minutes. So , first thing we have to do is convert the minutes into seconds. It would be - Time ( t ) = 5 minutes = 5 × 60 sec = 300 sec [ 1 min = 60 sec ]

Here , We're provided - Initial velocity ( u ) = 0 , Final velocity ( v ) = 60 m / s , Time taken ( t ) = 300 seconds & We're asked to find out the acceleration ( a ) & distance covered by the jeep ( s ) .

$\large{ \tt{♨ \:LET'S \: START}} :$

Acceleration is defined as the rate of change of velocity. We know :

$\large{ \boxed{ \tt{❁ \: ACCELERATION \: (a) = \frac{FINAL \: VELOCITY(v) - INITIAL \: VELOCITY(u)}{TIME \: TAKEN \: ( \: t \: )}}}}$

- Plug the values & then simplify !

$\large{ \bf{↬a = \frac{60 - 0}{300} = \frac{60}{300} = \boxed{ \bold{ \bf{0.2 \: m {s}^{ - 2} }}} }}$

The acceleration of the jeep is 0.2 m/s²

$\large{ \tt{۵ \: AGAIN, \: USING\: SECOND \: EQUATION \: OF \: MOTION}} :$

$\boxed{ \large{ \bf{✾ \: s = \frac{u + v}{2} \times t}}}$

- Plug the values & then simplify !

$\large{ \bf{↦s = \frac{0 + 60}{2} \times 300 = \boxed{ \bold{ \bf{9000 \: m}}}}}$

The distance covered by the jeep is 9000 m .

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7 0

3 years ago

How many coulombs of positive charge are there in 3.60 kg of plutonium, given its atomic mass is 244 and that each plutonium ato

PtichkaEL [24]

1 mole of plutonium = 244 gm

3.6 kg of plutonium = 3.6 × 1000 = 3600 gm

Number of moles = 3600 ÷ 244 = 14.754 moles

One moles of plutonium contains protons = $6.023 \times {10}^{23} \times 94$

Total number of protons in 14.754 moles = $6.023 \times {10}^{23} \times 94 \times 14.754$

Total number of protons in 14.754 moles = $8353.15 \times {10}^{23}$

Total Positive charge = $8353.15 \times {10}^{23} \times 1.6 \times {10}^{-19}$

Total positive charge = $13365.04 \times {10}^{4}$ C

3 0

4 years ago

Four identical 2.5 mF capacitors are connected together electrically. What is the greatest possible capacitance of the combinati

MrRa [10]

When capacitors are in PARALLEL, they add up. (like resistors in series)

If you connect these four capacitors in parallel, the combination behaves like a single capacitor of (4 x 2.5) = 10 mF.

That's the greatest capacitance you can make with these four pieces.

7 0

3 years ago