3 years ago

During combustion, a fuel’s electromagnetic energy is converted into thermal energy.

Physics

1 answer:

swat323 years ago

6 0

True I believe..................

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Vince is baking a cake. He pours flour and sugar into an empty bowl. The substance in the bowl is a(n) __________.

vladimir1956 [14]

It is 'C', a mixture, because flour and sugar are both a compound.

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3 years ago

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A jet plane travels at 40.8 km at an average speed of 340 m/s calculate how long this journey took- giveyour answer to the neare

Tju [1.3M]

Answer:

$2\ \text{minutes}$

Explanation:

d = Distance traveled = 40.8 km

s = Speed of jet = 340 m/s

Time is given by

$t=\dfrac{d}{s}$

$\Rightarrow t=\dfrac{40.8\times 10^3}{340}$

$\Rightarrow t=120\ \text{s}$

$\Rightarrow t=\dfrac{120}{60}=2\ \text{minutes}$

The time taken to complete the journey is $2\ \text{minutes}$ .

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2 years ago

You connected the 5 Ω, 10 Ω, 15 Ω resistors in series with a 90 V battery. What is the current?

kykrilka [37]

Answer:

Explanation:

Rtoal=R1+R2+R3=5+10+15=30

I=V/R 90/30

I=3

3 0

2 years ago

A rectangular piece of cardboard, whose area is 352 square centimeters, is made into an open box by cutting a 2-centimeter sq

Usimov [2.4K]

Answer:

Dimension of cardboard is 22 m by 16 m

Explanation:

Given that,

Area = 352 cm²

Side of each square cutting from corner = 2 cm

Volume of box = 432 cm³

Let the two sides are x and y.

The area of the rectangular piece is

$xy=352$

$y=\dfrac{352}{x}$ -------- (1)

The volume of the rectangular piece

$2(x-4)(\dfrac{352}{x}-4)=432$

$x^2-38x+352=0$

$(x-16)(x-22)=0$

x=16,22

Put the value of x in the equation (I)

For x = 16

$y=\dfrac{352}{16}=22$

For x = 22

$y=\dfrac{352}{22}=16$

Dimension of cardboard is 22 m by 16 m

8 0

3 years ago

A baby carriage is rolling down a hill. Take into consideration, the carriage has 90J of kinetic energy and the mass of the carr

Sphinxa [80]

Answer:

YES. 6√10

Explanation:

apply E=1/2mv^2 and find the velocity of carriage which is 6√10 ms-1

as our velocity is higher than that of cart. we can catch the carriage

7 0

2 years ago