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3 years ago

Which statement correctly compares nuclear fission with nuclear fusion?

Physics

2 answers:

kow [346]3 years ago

8 0

Answer:

Explanation:

B. Nuclear fission uses hydrogen, and nuclear fusion uses uranium

AURORKA [14]3 years ago

5 0

He’s is correct it B

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A helicopter is moving horizontally to the right at a

In-s [12.5K]

Answer:

Explanation:

Given

Weight of helicopter $W=53800 N$

inclination of blades with vertical $\theta =21^{\circ}$

Suppose $F_l$ is the lifting Force

Now using F-B-D

$F_{net}=0$ as helicopter is moving with constant velocity

balancing forces in Vertical Force

$F_l\cos \theta -W=0$

$F_l\cos \theta =W$

$F_l=\frac{W}{\cos \theta }$

$F_l=\frac{53800}{\cos 21}$

$F_l=57,627.6\ N$

Now sin component of lift is air resistance

$F_l\sin \theta -R=0$

where R=air resistance

$R=F_l\sin \theta$

$R=57,627.6\times \sin (21)$

$R=20,651.88\ N$

8 0

4 years ago

Formula for finding radius

Makovka662 [10]

r=d/2

to find radius, you divide the diameter by 2 or multiply it by one half

8 0

3 years ago

A ball is thrown straight up. It passes a 2.00-m-high window 7.50 m off the ground on its path up and takes 1.30 s to go past th

OLga [1]

Answer:

u = 13.67 m/s

Explanation:

given,

window height = 2 m

window is 7.5 m off the ground on its path up

total distance from the ground to pass the window = 2 + 7.5 = 9.5 m

time taken to go past the window = 1.30 s

using equation of motion

$S = u t +\dfrac{1}{2}gt^2$

$(2+7.5)= u\times 1.3 -0.5\times 9.8\times 1.3^2$

$u\times 1.3 = 9.5 + 8.281$

u = 13.67 m/s

hence, the initial velocity of the ball is equal to 13.67 m/s

5 0

3 years ago

A hard drive disk rotates at 7200 rpm. The disk has a diameter of 5.1 in (13 cm). What is the speed of a point 6.0 cm from the c

ExtremeBDS [4]

Answer:

The speed will be "3.4×10⁴ m/s²".

Explanation:

The given values are:

Angular speed,

w = 7200 rpm

i.e.,

= $7200 \times \frac{2 \pi}{60}$

= $753.6 \ rad/s$

Speed from the center,

r = 6.0 cm

As we know,

⇒ Linear speed, $v=wr$

On putting the estimated values, we get

$=753.6\times 0.06$

$=45.216 \ m$

Now,

Acceleration on disk will be:

⇒ $a=\frac{v^2}{r}$

$=34074 \ m/s^2$

$=3.4\times 10^4 \ m/s^2$

3 0

3 years ago

Sasha is listening to music. He speeds up the music and the music becomes quieter. Which pair of longitudinal waves best represe

Romashka [77]

Answer:

thw poopoo0[ wavez

Explanation:

8 0

2 years ago