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katrin [286]
3 years ago
14

Which of the following scientists did not contribute scientific discoveries to physical science? A) Isaac Newton B) Marie Curie

C) Gregor Mendel
Physics
1 answer:
lianna [129]3 years ago
3 0

Answer:

It is Gregor Mendel because he was a Catholic Augustinian monk and naturalist

Explanation:

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A person observes a firework display for A safe distance of .750 km. Assuming that sound travels at 340 m/s in air what is the t
WINSTONCH [101]

Answer:

t = 2.2 s

Explanation:

Given that,

A person observes a firework display for A safe distance of 0.750 km.

d = 750 m

The speed of sound in air, v = 340 m/s

We need to find the between the person see and hear a firework explosion. let it is t. So, using the formula of speed.

v=\dfrac{d}{t}\\\\t=\dfrac{d}{v}\\\\t=\dfrac{750\ m}{340\ m/s}\\\\t=2.2\ s

So, the required time is 2.2 seconds.

3 0
3 years ago
A hiker travels south along a straight line path for 1.5 hours with an average velocity of 0.75 km/hr, then travels south for 2.
ANTONII [103]
Distance travelled in south direction= 1.5hr*0.75km/hr= 1.125km
Distance travlled in north direction= 0.90*2.5=2.25
Net displacement = 2.25-1.125= 1.125 to the north
7 0
3 years ago
A 200.0 kg piano is elevated by a crane to a height of 10.0 meters above a sidewalk. If the rope holding the piano breaks, what
Nitella [24]
All that business about the crane and the rope and the falling
is only there to confuse us.

The piano ended up 5 meters above the ground.

           Potential energy = (mass) (gravity) (height)

                                   = (200 kg) (9.81 m/s²) (5 m)

                                   = (200 · 9.81 · 5)  (kg-m²/s²)

                                   =   9,810 joules   . 
5 0
3 years ago
The graph shows a ball rolling from A to G. At which point does the ball have the greatest kinetic energy?
AysviL [449]

please give garph picture

3 0
3 years ago
Read 2 more answers
How are nuclear reactions used to meet the world’s energy needs?
lutik1710 [3]

Answer:

A. Both fusion and fission are used to generate electricity, but more fission reactors than fusion reactors are in use.

Explanation:

Nuclear energy originates from the splitting of uranium atoms – a process called fission. This generates heat to produce steam, which is used by a turbine generator to generate electricity. Because nuclear power plants do not burn fuel, they do not produce greenhouse gas emissions.

Hope I helped!

Mark brainliest if you want. :D

4 0
3 years ago
Read 2 more answers
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