Answer:
Urbanization, oil spill, leaky landfill and deforestation are causes of pollution while desertification, smog, contaminated water are the effects of pollution.
Explanation:
Urbanization is generally associated with an increase in the number of industries. The waste materials in different forms from the factories pollute air, water and soil.
The effluents from factories released into rivers cause water pollution and harm the aquatic life. Water contaminated by industrial waste becomes unsuitable for drinking. Forests play a major role in controlling the amount of carbon dioxide in the atmosphere.
Deforestation increases the amount of carbon dioxide in the atmosphere. Oil spills usually occur in oceans and seas and it causes water pollution and threatens aquatic life.
Answer:
Cause
industrial wastes dumped into rivers
oil spilled on land mixes with runoff
sewage dumped into rivers
Effect
destroyed natural habitats
fish die-off
spread of disease
Explanation:
plato
The moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is .
Given data:
The mass of each sphere is, .
Length of side of square is, .
The expression for the moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is,
Here,
R is the distance between center of the square and the sphere. And its value is,
Then, moment of inertia is,
Thus, the moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is .
Learn more about moment of inertia here:
The moment of inertia of the system about an axis through the center of the square, perpendicular to the plane is 0.064 kg.m²
Let's recall Moment of Inertia formula as follows:
where:
I = moment of inertia
m = mass of object
R = distance between the object and the axis of rotation.
Given:
mass of sphere = m = 0.200 kg
length of side = x = 0.400 m
Asked:
net moment of inertia = ΣI = ?
Solution:
Let's ilustrate this question as shown in the attachment.
Firstly , let's find distance between center of the square and the sphere:
Next , we could find total moment of inertia as follows:
Grade: High School
Subject: Physics
Chapter: Rotational Dynamics
Answer:
107 m
Explanation:
Convert km/h to m/s:
128.4 km/h × (1000 m / km) × (1 h / 3600 s) = 35.67 m/s
Distance = rate × time
d = 35.67 m/s × 3.0 s
d = 107 m
20 s.
a) What is the average acceleration of the car?
b) What distance does it travel in this time?
Explanation:
Average acceleration is defined as the rate of change of velocity to the rate of change of period. Change of velocity refers to the difference between final velocity and initial velocity. The unit of acceleration is meter/sec/sec (or) m s^2.
Avg Acceleration=(Final velocity - Initial velocity) /(Final time - Initial time)
a. To find the average acceleration of the car, (initial velocity and initial time is 0, the final velocity is 28 m/s, final time = 20 s)
Avg acceleration of the car = (28 - 0) / (20 - 0)
= 28 / 20 = 1.4 m / s^2.
b. The distance traveled is given by the product of speed and time
Distance traveled = Speed * Time
The Distance traveled by the car = 28 * 20 = 560 m.
By applying basic physics formulas, the car's average acceleration can be determined as 1.4 m/s², and the distance it travels in 20 seconds is 280 meters.
To answer this question, you'll need to apply basic physics formulas. Let's go step by step:
a) What is the average acceleration of the car?
Acceleration is defined as the rate of change of velocity per unit of time. The formula is Acceleration = (Final speed - Initial speed) / Time. Here, the initial speed is 0 (because the car is starting from rest), final speed is 28 m/s and time is 20 s.
So, Acceleration = (28 m/s - 0) / 20 s = 1.4 m/s². That's your answer for part a.
b) What distance does it travel in this time?
The distance traveled by the car can be found using the formula of linear motion: Distance = Initial speed x Time + 0.5 x Acceleration x Time². Since the car starts from rest, the initial speed is zero, and this component of the formula will be zero.
So, Distance = 0 + 0.5 x 1.4 m/s² x (20 s)² = 280 m. So, the car travels 280 meters in that time.
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