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3 years ago

Genes provide ____ for a cell to assemble molecules that express traits such as eye color or seed shape

Physics

2 answers:

Delvig [45]3 years ago

4 0

Nucleus? that's what I'm guessing but I'm not sure it's right :/

Feliz [49]3 years ago

3 0

Directions because the genes are what makes the traits for the offspring

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If the frequency of the wave is 140 hz, what is the speed of the wave?

saveliy_v [14]

If f=140hz
speed=?
wavelength=?
without all information given, it would be difficult to answer but the formula is speed=frequency ×wavelength

4 0

4 years ago

Convert 3 hours 21 minutes to decimal hours.

Oxana [17]

Total hours is 3.35 hours

<u>Explanation:</u>

Given:

convert 3 hours 21 minutes to decimal hours

We know:

1 hour = 60 minutes

and

1 minute = 60 seconds

1 minute = 1 / 60 hours

So,

21 minutes = $\frac{21}{60} hours$

= 0.35 hours

Total hours would be = 3 hours + 0.35 hours

= 3.35 hours

Therefore, total hours is 3.35 hours

7 0

3 years ago

Comic strip hero superman meets an asteroid in outer space and hurls it at 100m/s. he has a mass of "m". The astroid has a mass

Katyanochek1 [597]

Answer:

v = -10⁵ m/s

Explanation:

given,

speed of asteroid,v' = 100 m/s

mass of superman = m

mass of asteroid,M = 1000 m

recoil velocity of superman,v= ?

using conservation of momentum.

m u + M u' = m v + M v'

initial velocity of asteroid and superman is equal to zero

0 + 0 = m v + 1000 m x 100

m v = -100000 m

v = -10⁵ m/s

superman's velocity after throwing the asteroid is equal to v = -10⁵ m/s

8 0

4 years ago

How to do this question plz answer

Monica [59]

Answer:

I can't see the attachment it's too blury I can see bout two words and thats it

Explanation:

Think i got an eye infection or bad eye sight

3 0

3 years ago

A 4.2-g bullet is fired at a speed of 370 m/s into a stationary lead block, which moves a distance of 1.2 m before coming to res

Natali5045456 [20]

Answer:

(a) F = 239.575 N (b) t = 0.00649s or 6.49 ms

Explanation:

(a) By law of energy conservation, the bullet kinetic energy will be transferred to work done on stopping it from moving.

Formula for Kinetic Energy $E_k = \frac{mv^2}{2}$ where m is bullet mass, v is the velocity

Formula for work $W = FS$ where F is the average force and S is the distance travelled.

$E_k = W$

$\frac{mv^2}{2} = FS$

$F = \frac{mv^2}{2S}$

Substitute m = 4.2 g = 0.0042 kg, v = 370 m/s and S = 1.2 (m)

$F = \frac{0.0042*370^2}{2*1.2} = 239.575 N$

(b) If the force is constant, since the mass is constant and F = ma according to Newton's 2nd law, the acceleration on bullet is also constant

$a = \frac{F}{m} = \frac{239.575}{0.0042} = 57041.67 (m/s^2)$

We also have $v(t) = v_0 + at$

At the time the bullet is coming to rest, $v(t) = 0, a = -57041.67 m/s^2$

Therefore, $0 = 370 - 57041.67t$

$t = \frac{370}{57041.67} = 0.00649 s = 6.49 ms$

3 0

4 years ago