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3 years ago

Which is a true statement about gender roles?

1 answer:

6 0

I would c is the best answer. As someone who is closed to multiple cultures, I know that gender roles are not necessarily the same across all cultures. Male-female friendships are definitely easier to develop now than in the past. I also know plenty of males who are very in touch with their emotions. Personally, when making friends, I tend to talk to the people with similar interests, simply because then I actually have something to talk about and it’s not awkward.

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A heavy piece of hanging sculpture is suspended by a 90 cm-long, 5.0 g steel wire. When the wind blows hard, the wire hums at it

kupik [55]

Answer: The mass of the sculpture is 11.8kg

Explanation:

Using the equation of fundamental frequency of a taut string.

f = (1/2L)*√(T/μ) .... (Eqn1)

Where

f= frequency in Hertz =80Hz

T = Tension in the string = Mg

M represent the mass of the substance (sculpture) =?

g= 9.8m/s^2

L= Length of the string=90cm=0.9m

μ= mass density = mass of string /Length of string

mass of string =5g=0.005kg

L=0.9m

μ=0.005/0.9 = 0.0056kg/m

Using (Eqn1)

80= 1/(2*0.9) √(T/0.0056)

144= √(T/0.0056)

Square both sides

20736= T/0.0056

T= 116.12N

Recall that T =Mg

116.12= M * 9.8

M=116.12/9.8

M= 11.8kg

Therefore the mass of the sculpture is 11.8kg

4 0

3 years ago

A swimming duck paddles the water with its feet once per time interval of 1.6 s, producing surface waves with this period. The d

soldier1979 [14.2K]

Answer:

a. 0.275m/s

b. 1.08m

Explanation:

Since the duck the paddle the water at an interval of 1.6sec, we can determine the frequency of the wave formed using the equation

f=1/T

Where T is the period.

f=1/1.6

f=0.625Hz.

Also from the equation used in determining the speed of a wave

V=fλ,

v=0.625*0.2

v=0.125m/s

in the question it was stated that that the duck produce a wave moving at a speed of 0.40m/s.

Hence the speed of the duck is

v(duck)=0.40-0.125

v(duck)=0.275m/s

b. The distance between the crest behind the duck is the wavelength of the waves.

To determine this, the wavelength is expressed as

λ=v/f

but the speed in this case is the speed of the duck and the surface wave,as this account for the wave speed behind the duck,

Hence we have

λ=(0.40+0.275)/0.625

λ=1.08m.

The wavelength behind the duck is 1.08m

4 0

3 years ago

If an object starting from rest falls 5.7 seconds how far does it fall

White raven [17]

Kinematic question!
Start with your knowns!

$t = 5.7s \\ v0 = 0 \frac{m}{s} \\ a = - 9.8 \frac{m}{ {s}^{2} }$
we want to find x!

the only kineamtic that works with this info is the third!
$x = v0 \times t + \frac{1}{2} \times a \times {t}^{2}$
so we plug in our values and get
$x = 0 + \frac{1}{2} \times ( - 9.8 \frac{m}{ {s}^{2} } ) \times ( {(5.7s)}^{2} )$
this'll equal out to -159.2 meters.

our units equal out, so we know our answer is correct!

5 0

3 years ago

A parallel circuit has a total current of 4 Amperes and an equivalent resistance of .5 Ohms. What is the power in this circuit?

tiny-mole [99]

Answer:

=8.0 Watts

Explanation:

Power is a ratio of work done over time. The power in an electric circuit is calculated using the following formula:

P=I²R

P is power, I is current, R is resistance

Therefore, Power= 4²ₓ 0.5Ω

=8.0 Watts