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olchik [2.2K]
2 years ago
14

Please help on this one? <3

Physics
1 answer:
olga55 [171]2 years ago
3 0
Since the wind is traveling in the same direction as the helicopter then it would increase the helicopters speed(basically giving it a little boost) so just add the wind speed to the ground speed to get the airspeed if you need more help just comment
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If the coefficient of static friction is 0.40, and the same ladder makes a 51° angle with respect to the horizontal, how far alo
inysia [295]

To solve this problem, we apply the concepts related to the sum of forces and balance in a diagram that will be attached, in order to identify the behavior, direction and sense of the forces. The objective is to find an expression that is in terms of the mass, the angle, the coefficient of friction and the length that allows us to identify when the ladder begins to slip. For equilibrium of the ladder we have,

\sum F_x = 0

\sum F_y = 0

\sum M_o = 0

Now we have that

f_1 = N_2

N_1 = mg

And for equilibrium of the two forces we have finally

mgdcos\theta = N_2lsin\theta

Rearranging to find the distance,

d = \frac{N_2}{mg}ltan\theta

d = \frac{f_1}{mg}ltan\theta

So if we have that the frictional force is equivalent to

f_1 = \mu N_1

f_1 = \mu mg

f_1 = (0.4)(57*9.8)

f_1 = 223.44N

With this value we have that

d = \frac{(0.4)(57)(9.8)}{57*9.8}(7.5) tan(60\°)

d = 5.19m

Therefore can go around to 5.19m before the ladder begins to slip.

5 0
3 years ago
Which of the following statements is FALSE?
kobusy [5.1K]
The false statement would be :
C. constructive interference occurs when the crest of one wave overlaps the trough of another and their individual effects are reduced or cancelled out.

Constructive interference should be when the crest of one wave overlaps another and their individual effects are add up, becoming a single wave of increased amplitude<span />
6 0
3 years ago
If a battery causes a wire to carry a current of 4 Amps how many coulombs of charge flow past any point in the wire in 3 seconds
BabaBlast [244]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

According to above question ~

  • Current (I) = 4 Amperes

  • Time (t) = 3 seconds

  • Charge (q) = ?

Let's find the charge (q) by using formula ~

  • I =  \dfrac{q}{t}

  • 4 =  \dfrac{q}{3}

  • q = 4 \times 3

  • q = 12 \:  \: coulombs

Hence, 12 coulombs of charge flow past any point in the wire in 3 seconds

7 0
3 years ago
One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a
Maurinko [17]

This question is not complete.

The complete question is as follows:

One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate. This creates “artificial gravity” at the outside rim of the station. (a) If the diameter of the space station is 800 m, how many revolutions per minute are needed for the “artificial gravity” acceleration to be 9.80m/s2?

Explanation:

a. Using the expression;

T = 2π√R/g

where R = radius of the space = diameter/2

R = 800/2 = 400m

g= acceleration due to gravity = 9.8m/s^2

1/T = number of revolutions per second

T = 2π√R/g

T = 2 x 3.14 x √400/9.8

T = 6.28 x 6.39 = 40.13

1/T = 1/40.13 = 0.025 x 60 = 1.5 revolution/minute

6 0
3 years ago
How do I answer this question
maria [59]

Answer:

what question

Explanation:

6 0
3 years ago
Read 2 more answers
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