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2 years ago

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An object was thrown at a certain angle above the ground.It reaches a maximum height of 42.50 meters and hits back the ground 76

meters
1.find the time of flight
2.what is the initial velocity
3.find the angle of the projectile

1 answer:

aksik [14]2 years ago

7 0

Answer:

Explanation: Please see my attached calculations.

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Answer:

$74^{\circ} C$

Explanation:

We are given that

Mass of glass, $m=300 g$

$T_1=23^{\circ}$

Volume, $V=236cm^3$

Mass of water= $density\times volume=1\times 236=236 g$

Density of water= $1g/cm^3$

Temperature of hot water, $T=87^{\circ}$

Specific heat of glass, $C_g=0.2cal/g^{\circ}C$

Specific heat of water, $C_w=1 cal/g^{\circ}C$

$Q_{glass}=m_gC_g(T_f-T_1)=300\times 0.2(T_f-23)$

$Q_{water}=m_wC_w(T_f-T)=236\times 1(T_f-87)$

$Q_{glass}+Q_{water}=0$

$300\times 0.2(T_f-23)+236\times 1(T_f-87)$

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a plane travels 204 km, northeast in 15.0 minutes. It also increases elevation by 1.6 km, upward in the same amount of time. Wha

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Answer:

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Explanation:

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15.0 minutes = 900 seconds

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Velocity = 1600 / 900

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Explanation:

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a disk of a radius 50 cm rotates at a constant rate of 100 rpm. what distance in meters will a point on the outside rim travel d

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