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melamori03 [73]
3 years ago
14

Which statement correctly compares nuclear fission with nuclear fusion?

Physics
2 answers:
kow [346]3 years ago
8 0

Answer:

B

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:

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