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tamaranim1 [39]
3 years ago
7

A ball is thrown horizontally from the top

Physics
1 answer:
GaryK [48]3 years ago
4 0
Hi stepsister this question mark you are having the exams online exams ka waja is the only thing I need is the one I can do for this week and I am sending it a couple days to get
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Which fact is true during a fission chain reaction?
Free_Kalibri [48]

Answer:

The number of freely-moving neutrons decreases over time.

The number of freely-moving neutrons decreases over time.

Explanation:

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3 years ago
At NASA's Zero Gravity Research Facility in Cleveland, Ohio, experimental payloads fall freely from rest in an evacuated vertica
Diano4ka-milaya [45]

Answer:

(a). Energy is 64,680 J

(b) velocity is 51.43m/s

(c) velocity in mph is 115.0mph

Explanation:

(a).

The potential energy P of the payload of mass m is at a vertical distance h is  

P =mgh.

Therefore, for the payload of mass m = 50kg at a vertical distance of h = 132 m, the potential energy is

P = (50kg)(9.8m/s^2)(132m)

\boxed{P = 64,680J}

(b).

When the payload reaches the bottom of the shaft, all of its potential energy is converted into its kinetic energy; therefore,

mgh= \dfrac{1}{2}mv^2

v= \sqrt{2gh}

v = \sqrt{2*9.8*135}

\boxed{v = 51.43m/s}

(c).

The velocity in mph is

\dfrac{51.43m}{s} * \dfrac{3600s}{hr} * \dfrac{1mile}{1609.34m}

\boxed{v= 115.0mph}

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4 years ago
Which of the following are metric units? gallons kilograms pounds inches
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kilogram

Explanation:

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Which of the following are basic solutions? Check all that apply. A. Laundry detergent B. Vinegar C. Drain cleaner D. Antacids
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A laundry detergent
B vinegar
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4 years ago
Why does the candle light has no shadow when light fall on it?​
andrezito [222]
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