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3 years ago

In beachville, the last high tide occurred at 1:00 p.m. the next high tide will happen around _____. 1:25

Physics

2 answers:

Vladimir [108]3 years ago

8 0

At Around 1:25 a.m. it will happen

xxTIMURxx [149]3 years ago

4 0

The answer is 1:25am

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a particle of mass m sits at rest at x = 0. At time t = 0 a force given by F = Fe^(-t/T) is applied in the +x direction; F and T

wlad13 [49]

Explanation:

Given: $F=m\ddot{x}=Fe^{-\frac{t}{T}}$

Solving for $\ddot{x}$ :

$\ddot{x}=\frac{F}{m}e^{-\sqrt{\frac{F}{m} } t}$

where:

$T=\sqrt{\frac{m}{F}}$

Integrating to get $\dot{x}$ with initial conditions $\dot{x}(0)=0$ :

$\dot{x}=\sqrt{\frac{F}{m}}-\sqrt{\frac{F}{m}} e^{-\sqrt{\frac{F}{m}} t}$

Integrating to get x with initial conditions x(0) = 0:

$x=-1+\sqrt{\frac{F}{m}} t+e^{-\sqrt{\frac{F}{m}}t}$

When t=T:

$x=-1+\sqrt{\frac{F}{m}}\sqrt{\frac{m}{F}}+e^{-\sqrt{\frac{F}{m}}\sqrt{\frac{m}{F}}}=\frac{1}{e}$

$\dot{x}=\sqrt{\frac{F}{m}}-\sqrt{\frac{F}{m}} e^{-\sqrt{\frac{F}{m}}\sqrt{\frac{m}{F}}}=\sqrt{\frac{F}{m}}(1-\frac{1}{e})$

4 0

2 years ago

How many more times is kinetic energy increased if velocity triples?

san4es73 [151]

Nine times more (squared speed)

8 0

3 years ago

Which type of macromolecules a cell brake down food?

kobusy [5.1K]

Answer:

Hope this helps you find the answer

Explanation:

The proteins, lipids, and polysaccharides that make up most of the food we eat must be broken down into smaller molecules before our cells can use them—either as a source of energy or as building blocks for other molecules.

8 0

2 years ago

A small candle is 34 cm from a concave mirror having a radius of curvature of 22 cm. Where will the image of the candle be locat

xxTIMURxx [149]

Answer:

16.26 cm in front of the mirror

Explanation:

Using,

1/f = 1/u+1/v....................... Equation 1

Where f = focal focal length of the concave mirror, u = object distance, v = image distance.

make v the subject of the equation

v = fu/(u-f)................... Equation 2

Note: The focal length of a concave mirror is positive

Using the real- is- positive convention

Given: f = 22/2 = 11 cm, u = 34 cm.

Substitute into equation 2

v = (34×11)/(34-11)

v = 374/23

v = 16.26 cm.

The image will be formed 16.26 cm in front of the mirror.

5 0

2 years ago

A fluid, with a density of rho = 1165 kg/m3, flows in a horizontal pipe. In one segment of the pipe the flow speed is v1 = 4.53

Elza [17]

Answer:

The pressure difference between two pipe is $1.01 \times 10^{4}$ Pa

Explanation:

Density $\rho = 1165$ $\frac{kg}{m^{3} }$

Speed in one pipe $v_{1} = 4.53$ $\frac{m}{s}$

Speed in second pipe $v_{2} = 1.77$ $\frac{m}{s}$

According to the bernoulli equation,

The pressure difference is given by,

$P = \frac{1}{2} \rho v^{2}$

$P_{2} - P_{1} = \frac{1}{2} \rho (v_{1}^{2} - v_{2}^{2} )$

$P_{2} - P_{1} = \frac{1}{2} \times 1165 \times[ (4.53)^{2}- (1.77)^{2}]$

$P_{2} - P_{1} = 10128.51$

$P_{2} - P_{1} = 1.01 \times 10^{4}$ Pa

Therefore, the pressure difference between two pipe is $1.01 \times 10^{4}$ Pa

6 0

3 years ago