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Anton [14]
3 years ago
10

A runner jumps off the ground at a speed of 16m/s. At what angle did he jumps from the ground if he landed 8m away?

Physics
1 answer:
Masja [62]3 years ago
8 0
Into the balls inside ur pants
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If a rooster laid an egg on a roof where would the egg fall left or right
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Depends on how steep the roof is , maybe the egg will just stay where it is but if the roof is more to the left it will fall to the left and same goes for right !
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help please what is the heat required in kilocalories to convert 2 kg of ice at 0°c completely into steam at 100°c? a. 80 calori
ivann1987 [24]
<span>Q = mL 
</span>
We need to know the latent heat of fusion, L, for 0 degrees.

L = 336 kJ/kg, m = 2kg

where L is the latent heat for vaporization

Q = 2 * 336 = 672 kJ

For conversion between 0 and 100 degree Celsius

Q = mcθ,   specific heat capacity = 4.2 kJ/kgK

Q = 2*4.2* (100 - 0) = 840 kJ

For conversion to steam at 100 degrees Celsius

<span>Q = mL ,  L = latent heat of vaporization = 2256 kj/kg
</span>
Q = 2 * 2256 = 4512 kJ

Total heat = 672 + 840 + 4512 = 6024 kJ

= 6 024 000 J

But 1 calorie = 4.2 J

Therefore 6 024 000 J will be:           6 024 000/4.2 ≈ 1 434 286 Calories

≈ 1 434 kCalories
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A wave travels through a medium and displaces the particles perpendicular to the direction in Wich the wave is traveling . This
lianna [129]
Transverse waves travel through a medium and cause particles perpendicular to the direction.
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If it takes 320 N of force to push a box up a ramp, yet it would take 1,600 N of force to lift the box straight up, what is the
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A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. The simple harmonic
miss Akunina [59]

Answer:

0.07756 m

Explanation:

Given mass of object =0.20 kg

spring constant = 120 n/m

maximum speed = 1.9 m/sec

We have to find the amplitude of the motion

We know that maximum speed of the object when it is in harmonic motion is given by v_{max}=A\omega where A is amplitude and \omega is angular velocity

Angular velocity is given by \omega=\sqrt{\frac{k}{m}}  where k is spring constant and m is mass

So v_{max}=A\sqrt{\frac{k}{m}}

A=V_{max}\sqrt{\frac{m}{k}}=1.9\times \sqrt{\frac{0.2}{120}}=0.07756 \ m

3 0
3 years ago
Read 2 more answers
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