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Ray Of Light [21]

2 years ago

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Mathematics

2 answers:

omeli [17]2 years ago

7 0

Step-by-step explanation:

the speed of sound in dry air at 0°C is 331m/s(B).

hope this helps you.

Vladimir79 [104]2 years ago

3 0

<h2>Answer:</h2><h2>B. 331 m/s</h2><h2 /><h2>explanation</h2>

The speed of sound is about 331.5 m/s at 0 degree-Celsius. The speed of sound increases by 0.6 meters per second (m/s) for every degree-Celsius increase in temperature.

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A building is in a shape of a cube with a length, width , and height of 50 feet each the building across the street is in the sh

sweet-ann [11.9K]

Answer:

<u>The length of the building across the street is 250 feet</u>.

Step-by-step explanation:

These are the measurements of the real building:

Height = 50 feet

Width = 50 feet

Length = 50 feet

These are the measurements of the building across the street:

Height = We don't know

Width = 50 feet

Length = 50 * 5 = 250 feet

<u>The length of the building across the street is 250 feet</u>.

4 0

2 years ago

Suppose that a particle following the given path c(t) flies off on a tangent at t = t0. Compute the position of the particle at

Svetach [21]

Answer:

(30,35,0)

Step-by-step explanation:

We are given that

$C(t)=(2t^2,t^3-4t,0)$

$t_0=3,t_1=4$

The velocity of particle, $v(t)=c'(t)=(4t,3t^2-4,0)$

Substitute $t_0=3$

$C(3)=(2(3)^2,(3)^3-4(3),0))=(18,15,0)$

$v(3)=(4(3),3(3)^2-4,0)=(12,23,0)$

The tangent line at t=3 is given by

$l(t)=c(2)+(t-3)v(3)=(18,15,0)+(t-3)(12,23,0)$

Now, substitute t=4

$l(4)=(18,15,0)+(4-3)+(12,23,0)=(18,12,0)+(12,23,0)$

$l(4)=(30,35,0)$

Hence, the position of particle at $t_1=4$ =(30,35,0)

4 0

2 years ago

SOMEONE PLS HELP ASAP

harkovskaia [24]

42---number of students with blue eyes blond hair
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5 0

2 years ago

Read 2 more answers

The last question is not 3.6

I am Lyosha [343]

I’m assuming that you only need the answer to the last one but let me know if I’m wrong :)))

I believe C would be 23.6

8 0

3 years ago

Please help I need to finish my homework

valina [46]

Answer:

AB= 0.625 units (3 s.f.)

∠BAC= 52.9° (1 d.p.)

∠ABC= 32.1° (1 d.p.)

Step-by-step explanation:

Please see the attached pictures for full solution.

- Find AB using cosine rule

- find ∠BAC using sine rule

- find ∠ABC using angle sum of triangle property

4 0

2 years ago