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enot [183]
3 years ago
11

7. A high-speed digital camera captures a bungee jumper diving off a bridge. What happens to the distance between the jumper and

the bridge in each picture taken?
Physics
1 answer:
Elden [556K]3 years ago
3 0

in bungee jumping we know that the motion is like free fall

So let say that camera capture the pictures after every "t" interval of time

now here for the first "t" interval the free fall distance will be given as

d_1 = \frac{1}{2} gt^2

now for next interval the distance is

d_2 = \frac{1}{2}g(2t)^2 - \frac{1}{2}gt^2 = \frac{3}{2}gt^2

again next "t" seconds

d_3 = \frac{1}{2}g(3t)^2 - \frac{1}{2}g(2t)^2= \frac{5}{2}gt^2

so in each consecutive time interval the distance is increasing

and the distance of fall in each interval of time is given in the ratio of

1 : 3 : 5 : 7......................

so after each shot the distance will increase faster from the initial position

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What is the power of a refrigerator with voltage 110 V and<br> current 0.8 A?
tia_tia [17]

Answer: 88

Explanation:

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3 years ago
Words a child uses are called the spoken or ___ vocabulary
Vaselesa [24]

The answer is: Expressive vocabulary

Expressive vocabulary refers to the combination of all the words that a person has acquire throughout his/her life and can be used in various type of situations.

This would include all words in the child vocabulary, starting from the child's   written language, spoken language or even the child's manually signed words.

4 0
3 years ago
Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.59 times a second. A tack is stuck in the tire a
Vesna [10]

Answer:

Tangential speed=5.4 m/s

Radial acceleration=88.6m/s^2

Explanation:

We are given that

Angular speed=2.59 rev/s

We know that

1 revolution=2\pi rad

2.59 rev=2\pi\times 2.59=5.18\pi=5.18\times 3.14=16.27 rad/s

By using \pi=3.14

Angular velocity=\omega=16.27rad/s

Distance from axis=r=0.329 m

Tangential speed=r\omega=16.27\times 0.329=5.4m/s

Radial acceleration=\frac{v^2}{r}

Radial acceleration=\frac{(5.4)^2}{0.329}=88.6m/s^2

6 0
3 years ago
The steering wheel of a car has a radius of 0.19 m, and the steering wheel of a truck has a radius of 0.25 m. The same force is
kodGreya [7K]

Answer:

\frac{T_t}{T_c} = 1.32

Explanation:

The torque applied on an object can be calculated by the following formula:

T = Fr

where,

T = Torque

F = Applied Force

r = radius of the wheel

For car wheel:

T_c = Fr_c\\

For truck wheel:

T_t = Fr_t

Dividing both:

\frac{T_t}{T_c} = \frac{Fr_t}{Fr_c}

for the same force applied on both wheels:

\frac{T_t}{T_c} = \frac{r_t}{r_c} \\

where,

rt = radius of the truck steering wheel = 0.25 m

rc = radius of the car steering wheel = 0.19 m

Therefore,

\frac{T_t}{T_c} = \frac{0.25\ m}{0.19\ m} \\

\frac{T_t}{T_c} = 1.32

8 0
3 years ago
Starting from rest, a 88-kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a m
Cloud [144]

Answer:h=7.22 m

Explanation:

Given

mass of firefighter m=88 kg

Frictional Force F=800 N

average speed at bottom v=3.2 m/s

Let h be the height of Pole

net force on Firefighter is

F_{net}=88\times 9.8-800=62.4

therefore net acceleration is

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using v^2-u^2=2ah

here v=3.2 m/s

u=0

(3.2)^2-0=2\times 0.709\times h

h=\frac{10.24}{1.418}

h=7.22 m

3 0
3 years ago
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