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4 years ago

Which element could not form in the sun and would have to be formed in a supernova?

Physics

1 answer:

Nimfa-mama [501]4 years ago

3 0

Uranium (atomic number 92)

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Which type of electromagnetic waves has the shortest wavelength? The answer is Ultraviolet

jarptica [38.1K]

Answer:

Gamma Rays .

Explanation:

3 0

3 years ago

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Longitude lines are not ____________________________ like latitude lines.

vekshin1

They are not parallel like latitude lines. They meet at the poles, but latitude lines never meet

6 0

3 years ago

HELP PLEASE NOWWWW !!!! ( 1 ) Jill and Scott both road their bikes for 30 minutes. Jill traveled 5 kilometers and Scott trave

katovenus [111]

Jill and Scott both moves for 30 minutes

now if Jill cover 5 km distance and Scott cover 10 km distance

now we know that the formula of speed is given as

$speed = \frac{distance}{time}$

now we will have

speed of Jill

$v = \frac{5}{0.5} = 10 km/h$

speed of Scott

$v = \frac{10}{0.5} = 20 km/h$

so correct answer here is

Scott had the faster speed since he rode at 20 k/h while Jill only traveled 10 km/h.

#2

distance travelled by each car is given as

$d = 400 miles$

now here it is given that

time taken by green car

$t_1 = 10 hours$

time taken by yellow car

$t_2 = 8 hours$

now we can find the speed of two cars

$speed = \frac{distance}{time}$

speed of green car

$v = \frac{400}{10} = 40 mph$

speed of yellow car

$v = \frac{400}{8} = 50 mph$

so correct answer will be

The yellow car was faster. Yellow traveled at a speed of 50 mph while green was traveling at an average of 40 mph.

6 0

3 years ago

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2) Billy jumps upward with a velocity of 4.2 m/s off a 6m high diving board. What is his final velocity once he hits the water?

Yuliya22 [10]

Answer:

The value of the final velocity is $v = 11.6 \ m/s$

Explanation:

Generally from kinematic equation

$v^2 = u^2 + 2as$

Here a is the acceleration which is equivalent to g

$v^2 = u^2 + 2gs$

substituting 6 m for s , 4.2m/s for u

$v^2 = 4.2^2 + 2 * 9.8 * 6$

$v = 11.6 \ m/s$

7 0

4 years ago

A ball with a mass of 0.5 kilograms is lifted to a height of 2.0 meters and dropped. It bounces back to a height of 1.8 meters.

Degger [83]

Hi, thank you for posting your question here at Brainly.

To compute for the change in potential energy, the equation would be:

delta PE = mg*delta h
delta PE = 0.5*9.81*(2-1.8)
delta Pe = 0.98 J

The potential energy is converted to kinetic energy.

3 0

4 years ago

Read 2 more answers