2 years ago

Can you help me? it's an emergency

Physics

1 answer:

satela [25.4K]2 years ago

4 0

Yes but pleas be more specific

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an aircraft landing on an air craft carrier is brought to a complete stop from an inital velocity of 215km/hr in 2.7 seconds. wh

worty [1.4K]

u= 215 km/hr = 215 * 1000/ 3600 = aprx 60m/s
v=0
t=2.7sec
v= u - at
u= at
60/2.7 = 22.23 m/s^2

Hope it helps

8 0

2 years ago

A freezer has a coefficient of performance of 4.1. You place 0.45 kg of water at 16°C in the freezer, which maintains its temper

velikii [3]

Ohh this is quite a lot umm i’ll be back hold on

5 0

2 years ago

Dams are made wider at the bottom than at the top?

malfutka [58]

Yes dams are made wider at the bottom because the pressure of the water pressure is greater there

8 0

2 years ago

Four springs with the following spring constants, 113.0 N/m, 65.0 N/m, 102.0 N/m, and 101.0 N/m are connected in series. What is

Llana [10]

Answer:

$K_e_q=22.75878093\frac{N}{m}$

$f=1.363684118Hz$

Explanation:

In order to calculate the equivalent spring constant we need to use the next formula:

$\frac{1}{K_e_q} =\frac{1}{K_1} +\frac{1}{K_2} +\frac{1}{K_3} +\frac{1}{K_4}$

Replacing the data provided:

$\frac{1}{K_e_q} =\frac{1}{113} +\frac{1}{65} +\frac{1}{102} +\frac{1}{101}$

$K_e_q=22.75878093\frac{N}{m}$

Finally, to calculate the frequency of oscillation we use this:

$f=\frac{1}{2(pi)} \sqrt{\frac{k}{m} }$

Replacing m and k:

$f=\frac{1}{2(pi)} \sqrt{\frac{22.75878093}{0.31} } =1.363684118Hz$

4 0

3 years ago

If the pressure acting on a given sample of an ideal gas at constant temperature is tripled, what happens to the volume of the g

oee [108]

Answer:

Explanation:

According to Boyle's law for constant temperature of gas Pressure is inversely proportional to the volume of gas.

$PV=nRT$

$PV=constant$

$P\propto \frac{1}{V}$

if Pressure is tripled then

$P\times V_1=3P\times V_2$

$V_2=\frac{V_1}{3}$

Volume becomes one-third of original volume

7 0

3 years ago