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3 years ago

5

What do you mean by population size explain

1 answer:

torisob [31]3 years ago

8 0

Population size is the actual number of individuals in a population. Population density is a measurement of population size per unit area, i.e., population size divided by total land area. Abundance refers to the relative representation of a species in a particular ecosystem.

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If a car used 260,000 W of power to complete a race in 15 s, how much work did the car do?

hichkok12 [17]

the answer is J. 3,900,000 got it right on the test

7 0

3 years ago

Read 2 more answers

A total electric charge of 2.00 nC is distributed uniformly over the surface of a metal sphere with a radius of 26.0 cm . The po

IrinaVladis [17]

Answer:

a) 40 V

b) 69.23 V

c) 69.23 V

Explanation:

See attachment for solution

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3 years ago

What is the speed of a walking person in m/s if the person travels 1000 m in 20 minutes?

Nata [24]

Answer:

0.83m/s

Explanation:

Given parameters:

distance = 1000m

time taken = 20min

Unknown:

Speed of the walking person = ?

Solution:

To solve this problem;

Speed = $\frac{distance}{time taken}$

Time taken should be in seconds;

1 min = 60s

20min = 20 x 60 = 1200s

Speed = $\frac{1000}{1200}$ = 0.83m/s

8 0

3 years ago

g A car is traveling east at 15.0 m/s when it turns due north and accelerates to 30.0 m/s, all during a time of 5.00 s. Calculat

nirvana33 [79]

Answer:

$from \: first \: equation \: of \: motion \\ v = u + at \\ a = \frac{v - u}{t} \\ a = \frac{30 - 15}{5} \\ a = 3 {ms}^{ - 2}$

3 0

3 years ago

Consider a wire of length L = 0.30m that runs north-south on a horizontal surface. There is a current of I = 0.50A flowing north

ankoles [38]

Answer:

Part a)

$F = 4.6 \times 10^{-6} N$

Part b)

$F = 8.2 \times 10^{-2} N$

Explanation:

Part a)

As we know that the magnetic force on the current carrying wire is given as

$F = i(\vec L \times \vec B)$

so we have

$F = iLB sin\theta$

$F = (0.50)(0.30)(0.5 \times 10^{-4}) sin38$

so we have

$F = 4.6 \times 10^{-6} N$

Part b)

Now magnetic field is changed to 0.55 T

so we will have

$F = (0.50)(0.30)(0.55) sin90$

$F = 8.2 \times 10^{-2} N$

3 0

3 years ago