3 years ago

0.40N

Physics

2 answers:

AnnZ [28]3 years ago

7 0

Answer:

um- yes

Explanation:

slega [8]3 years ago

4 0

Answer:

Explanation:

dwadad

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Due to an influx of wild animals, you need to enclose your garden. You have 500 feet of fencing and will enclose the garden on t

elena55 [62]

Answer:

so length of the fence is 250 feet

Explanation:

Given data

fencing (L) = 500 feet

enclose the garden = 3 sides

to find out

length of the fence

solution

we consider barn length x and width y

so we say x +2y = 500 ........1

we want to maximize length i.e xy = f

so we say

df/dx = ƛ × dL/dx

y = ƛ × 1

and

df/dy = ƛ × df/dy

x = ƛ × 2

from equation 1 we can say

2 ƛ + 2 ƛ = 500

so ƛ = 500/4 = 125

so that x = 2× 125 , y = 125

so x = 250 , y = 125

so length of the fence is 250 feet

3 0

4 years ago

What is the kinetic energy of a toy truck with a mass of 0.75 kg and a velocity of 4 m/s? (Formula: )

Dvinal [7]

Answer: Option (b) is the correct answer.

Explanation:

Kinetic energy is the energy of an object or particle when it is in motion.

Mathematically, Kinetic energy = $\frac{1}{2}mass \times (velocity)^{2}$

It is given that toy truck has mass = 0.75 kg, and velocity = 4 m/s.

Calculate the kinetic energy as follows.

Kinetic energy = $\frac{1}{2}mass \times (velocity)^{2}$

= $\frac{1}{2}0.75 kg \times (4 m/s)^{2}$

= $\frac{1}{2}0.75 kg \times 16 m^{2}/s^{2}$

= $0.75 kg \times 8 m^{2}/s^{2}$

= $6 kg m^{2}/s^{2}$

or, Kinetic energy = 6 joules

Thus, we can conclude that kinetic energy of toy truck is 6 J.

6 0

4 years ago

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