All categories

4 years ago

Could an average star, such as our sun, become a neutron star? Explain your answer.

1 answer:

4 0

No. Neutron stars are the remnants of very large stars that have supernova'd. Anything below 1.44 solar masses becomes a dwarf, anything above 5 solar masses becomes a black hole. Everything in between becomes a neutron star (or quark star, but it's not proven).

You might be interested in

PLEASE HELP ASAP!!!!!! What should each experiment only have one of? variable or constant

slega [8]

Answer:

the answer should be a constant

hope this helps!!

3 0

4 years ago

Read 2 more answers

A piano wire with mass 3.00 g and length 80.0 cm is stretched with a tension of 25.0 N. A wave with frequency 120.0 Hz and ampli

lys-0071 [83]

Answer:

(a) $P_{avg}$ = 0.22 W

(b) $P_{avg,2}$ = 0.056 W

Explanation:

given information:

the mass of piano wire, m = 3.00 g = 0.003 kg

tension, F = 25 N

length, l = 80 cm = 0.8 m

frequency, f = 120 Hz

amplitude, A = 1.6 mm = 0.0016 m

(a) the average power carried by the wave, $P_{avg}$

$P_{avg}$ = $\frac{1}{2}$ (√μF)ω²A²

where,

ω = 2πf = 2π120 = 754 $s^{-1}$

μ = $\frac{m}{l}$

= $\frac{0.003}{0.8}$

= 0.00375 kg/m

thus,

$P_{avg}$ = $\frac{1}{2}$ (√(0.00375)(25))(754)²(0.0016)²

$P_{avg}$ = 0.22 W

(b) What happens to the average power if the wave amplitude is halved.

based on the equation above, we know that the average power is proportional to the square amplitude. therefore

$\frac{P_{avg,1} }{P_{avg,2} } = \frac{A_{1} ^{2} }{A_{2} ^{2} } }$

$\frac{P_{avg,1} }{P_{avg,2} } = \frac{A_{1} ^{2} }{(0.5A_{1} )^{2} } }$

$P_{avg,2}$ = $\frac{0.22}{4}$

$P_{avg,2}$ = 0.056 W

4 0

3 years ago

A 5 kg box is sliding across a level floor. The box is acted upon by a force of 27 newtons east and a frictional force of 17 new

Juliette [100K]

Answer:

The acceleration of the box is 2.

Explanation:

According to Newton's second law of motion, the acceleration of any object will be directly proportional to the net unbalanced force acting on the object and inversely proportional to the mass of the object.

Net force = Mass × Acceleration

So $Acceleration = \frac{Net force}{Mass}$

Since in this case, the box is experiencing a force from east of magnitude 27 N and resisting force of about 17 N from west. So the net force will be the difference of acting and reacting force.

Net force = 27-17 = 10 N.

Thus, $Acceleration = \frac{10 N}{5 kg}$

So 2 $m/s^{2}$ is the acceleration of the box. Thus the magnitude of acceleration of the box is 2.

5 0

4 years ago

A student in the front of a school bus tosses a ball to another student in the back of the bus while the bus is moving forward a

Helga [31]

Answer:

d. may be either greater, smaller, or equal to that observed inside the bus.

Explanation:

The bus is moving at a constant speed. The ball tossed and received by the ball is inside the bus at a speed equal to the speed of the ball. Therefore the speed of the bus becomes zero with respect to the observer inside the bus.
Now the observer inside the bus noticed the ball from the inside of the bus, so he threw the ball back and forth from the ball with the speed v relative to the observer.
Now the observer outside the bus could see the bus moving at speed relative to its reference point and also throwing the ball from front to back. The speed of the ball to the observer outside the bus The speed of the bus to the observer outside the bus is minus the speed of the ball to the observer inside the bus.
Therefore, the ball speed = (u-v) relative to the observer outside the bus.

6 0

3 years ago

The nucleus of Hydrogen fluoride 178/72 consists of _______ protons.

Levart [38]

Could there be any options to this one?

6 0

3 years ago

Read 2 more answers