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3 years ago

acceleration is defined as the rate of change for which characteristic? a. displacement b. position c. velocity d. time

Physics

1 answer:

fredd [130]3 years ago

7 0

The answer is velocity.

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A rectangular dam is 101 ft long and 54 ft high. If the water is 35 ft deep, find the force of the water on the dam (the density

blsea [12.9K]

To solve this problem we will begin by finding the pressure through density and average depth. Later we will find the Force, by means of the relation of the pressure and the area.

$P = \rho h$

Here,

h = Depth average

$\rho$ = Density

Moreover,

$\text{Density of water}= \rho = 62.4lb/ft^3$

Replacing,

$P = (62.4lb/ft^3)(\frac{35}{2}ft)$

$P = 1092 lb/ft^2$

Finally the force

$\text{Force} = \text{Pressure}\times \text{Area of dam with water acting on it}$

$F = 1092lb/ft^2(101ft*52ft)$

$F = 5.735*10^6lbf$

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2 years ago

Define polarization in reference in the simple cell

vampirchik [111]

Answer:polarization pertains to the act or process of producing a positive electrical charge and a negative electrical charge such that between a nerve cell internal electrical charge..................

Explanation:

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3 years ago

A sled is being pulled along a horizontal surface by a horizontal force F of magnitude 600 N. Starting from rest, the sled speed

Simora [160]

Answer:

1440 W

Explanation:

First of all, we can find the total displacement of the sled, which is given by

$d=\frac{1}{2}at^2$

where

a = 0.08 m/s^2 is the acceleration

t = 1 min = 60 s is the time

Substituting,

$d=\frac{1}{2}(0.08 m/s^2)(60 s)^2=144 m$

Now we can find the wotk done on the sled, equal to the product between force and displacement:

$W=Fd=(600 N)(144 m)=86,400 J$

And finally we can fidn the average power, which is the ratio between the work done and the time taken:

$P=\frac{W}{t}=\frac{86,400 J}{60 s}=1440 W$

6 0

2 years ago

a racing car traveling initially at 8.0 m/s accelerates uniformly at 10.0 m/s^2 for 5 seconds. How far does it travel in this ti

Pepsi [2]

The car travels a distance of

(8.0 m/s) (5 s) + 1/2 (10.0 m/s²) (5 s)² = 165 m

7 0

2 years ago

A cycle lasts for 8 seconds. what is the frequency

Afina-wow [57]

This frequency definition leads us to the simplest frequency formula: f = 1 / T . f denotes frequency and T stands for the time it takes to complete one wave cycle measured in seconds. The SI frequency unit is Hertz (Hz), which equals 1/s (one cycle per second)

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Hope It Helps!

3 0

2 years ago