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3 years ago

7

Please help as soon as possible

2 answers:

pochemuha3 years ago

7 0

Answer:

Family Behaviors.

Explanation:

Family behaviors, such as the way you were raised and the ideas your family has about exercise, may influence your own ideas about exercise.

Family behaviors influence your ideas or actions for the future.

Nataliya [291]3 years ago

6 0

Answer:

Family Behaviors

Explanation:

family behaviors, such as the way you were raised and your family's ideas about exercise May influence how you feel about exercise.

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Look at the distance-time graph below. It shows Angela's journey as she walks to the end of the road and back. The gradient repr

sineoko [7]

Answer:

The gradient here represents Angela's Velocity.

Explanation:

A distance-time graph has distance on its y-axis and time on its x-axis. Therefore, the gradient of the distance-time graph is given by the following formula:

$Gradient = \frac{Change\ on\ y-axis}{Change\ on\ x-axis} \\\\Gradient = \frac{Distance\ Covered\ by\ Angela}{Time\ taken\ to\ cover\ the\ distance}\\\\Gradient = Angela's\ Velocity$

Since the rate of change of distance is called the velocity.

<u>Therefore, the gradient here represents Angela's Velocity.</u>

4 0

3 years ago

When a 100-Ω resistor is connected across the terminals of a battery of emf ε and internal resistance r, the battery delivers 0.

gladu [14]

Answer:

The emf and internal resistance of the battery are 9 volt and 2.04 Ω

Explanation:

Given that,

First resistor $R = 100\ \Omega$

Power $P = 0.794\ W$

Second resistor $R=200\ \Omega$

Power $P=0.401\ W$

We need to calculate the emf and internal resistance

Using formula of emf

$P=\dfrac{e^2}{R+r}$

For first resistor

$0.794=\dfrac{e^2}{100+r}$ ....(I)

For second resistor

$0.401=\dfrac{e^2}{200+r}$ .....(II)

From equation (I) and (II)

$\dfrac{795}{401}=\dfrac{200+r}{100+r}$

Using component of dividend rule

$\dfrac{393}{401}=\dfrac{100}{100+r}$

$r =2.04\ \Omega$

Now, Put the value of internal resistance in equation (I)

$0.794=\dfrac{e^2}{100+2.04}$

$e^2=0.794(100+2.04)$

$e=\sqrt{0.794(100+2.04)}$

$e=9\ volt$

Hence, The emf and internal resistance of the battery are 9 volt and 2.04 Ω

5 0

3 years ago

Lesechka [4]

Answer:

W'=125.44 N

Explanation:

The weight of a person on the surface of Earth is 784 N

Weight is given by :

W = mg

m is mass of the person and g is acceleration due to gravity on the surface of Earth (10 m/s²)

$m=\dfrac{W}{g}\\\\m=\dfrac{784}{10}\\\\m=78.4\ kg$

The acceleration due to gravity on the surface of Moon, g' = 1.6 m/s²

Weight of the person on the moon is :

W'=mg'

$W'=78.4\ kg\times 1.6\ m/s^2\\\\W'=125.44\ N$

Hence, the person would weigh 125.44 N on the Moon.

6 0

3 years ago

What is the value of work done on an object when a 70–newton force moves it 9.0 meters in the same direction as the force?

slava [35]

Answer:

630 J

Explanation:

W = Fdcosθ

W = 70(9)cos0

W = 630 J

5 0

3 years ago

A mass m0 is attached to a spring and hung vertically. The mass is raised a short distance in the vertical direction and release

iragen [17]

Answer:

The frequency of the oscillations in terms of fo will be f2=fo/3

E xplanation:

T= $2pie\frac sqrt {m}{k}$

$\frac {{f2}/times {fo}}$ =1:3

⇒f2=fo\3

Here frequency f is inversely poportional to square root of mass m.

so the value of remainder of frequency f2 and fo is equal to 1:3.

⇒ $\frac{f2} {f1}$ = $\frac sqrt{m1}[m2}$

⇒ $\frac{f2}{fo}$ = 1:3

⇒f2= $\frac{fo} {3}$

6 0

3 years ago