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prisoha [69]
3 years ago
9

A shot is projected at an angle of 55 to the horizontal with a velocity of of 10m/s. Calculate 1. the highest point reached 2. T

he range 3. Time taken to return to the ground 4. the height of the shot when it's path makes an angle of 25 with the horizontal 5. The velocity of the shot when it hits the ground.(g=10m/s)​
Physics
1 answer:
il63 [147K]3 years ago
5 0

Answer:

my gess g=10m/s

Explanation:

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Slightly downstream for the shortest possible time
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What is convectional current?​.... .
fiasKO [112]

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Convection is the transfer of heat from one place to another along with the motion of the object's particles. Water is a poor conductor. However, when the bottom water is heated, it turns out that the top water is also hot. This means that there is another way of transferring heat to the water, namely convection.

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What are three physical of aluminum foil
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Solid, ductile, and malleable. Ductile means it can conduct heat. Malleable means it can be shaped differently. 
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3 years ago
Azurite is a mineral that contains 55.1% of copper. How many meter of copper wire with diameter of 0.0113 in can be produced fro
soldier1979 [14.2K]

Answer:

1402.73 m

Explanation:

Mass of Azurite=3.25 lb

Percent of copper in AZurite mineral=55.1%

Diameter of  copper wire,d=0.0113  in

Radius of copper wire=r=\frac{d}{2}=\frac{0.0113}{2}=0.00565 in=\frac{565}{100000}=\frac{565}{100}\times \frac{1}{1000}=5.65\times 10^{-3}in

\frac{1}{1000}=10^{-3}

Density  of copper=\rho=8.96g/cm^3

1 lb=454 g

3.25 lb=3.25\times 454=1475.5 g

Mass of Azurite=1475.5 g

Mass of copper=\frac{55.1}{100}\times 1475.5=813 g

Density=\frac{Mass}{volume}

Using the formula

8.96=\frac{813}{volume\;of\;copper}

Volume of copper wire=\frac{813}{8.96}=90.7cm^3

Radius of copper wire=5.65\times 10^{-3}\times 2.54=14.35\times 10^{-3} cm

1 in=2.54 cm

Volume of copper wire=\pi r^2 h

\pi=3.14

Using the formula

90.7=3.14\times (14.35\times 10^{-3})^2\times h

h=\frac{90.7}{3.14\times (14.35\times 10^{-3})^2}

h=140273 cm

1 m=100 cm

h=\frac{140273}{100}=1402.73 m

Hence, the length of copper wire required=1402.73 m

7 0
3 years ago
A 40.0 kg box is placed on a 2.00 m tall shelf. If the box falls off the shelf, what is its kinetic energy as it strikes the gro
RUDIKE [14]
M = 40 Kg , g=9.8 m/s² , h = 2 m

PE = m g h

PE = (40) (9.8) (2)

PE = 784 J

KE = PE

½m v² = m g h

½ v² = g h

½ v² = (9.8) (2)

½ v² = 19.6

v² = 19.6×2

v² = 39.2

V = √39.2

V = 6.26 m/s

KE = ½mv²

KE = ½(40) (6.26)²

KE =783.8 J
6 0
3 years ago
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