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saveliy_v [14]
3 years ago
13

The organic sedimentary rock made from altered plant remains is known as

Physics
1 answer:
Sedaia [141]3 years ago
8 0
I'm pretty sure it is coal
hope this helps!
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The horizontal and vertical components of the initial velocity of a projectile are 50 m/s and 120 m/s respectively. What is the
katrin [286]

Answer:

<em>50 m/s</em>

<em></em>

Explanation:

In a projectile motion, acceleration is only on the vertical plane, that is, the vertical velocity is the only velocity component that undergoes acceleration under gravitational force. The horizontal component of velocity dos not change with time, and hence is the same as the initial velocity of the projectile.

6 0
4 years ago
A 0.62kg basketball is dropped from a height of 1.7 meters. How much work is done ?
Ray Of Light [21]

Answer:

The work done is 10.64Joules

8 0
3 years ago
You are designing a toaster heating element to consume 10A at 120V. The heating element will be made from a length of cylindrica
bulgar [2K]

Answer: a) 12 Ω; b)  15.10 m; c) 360 kJ

Explanation: In order to explain this problem we have to considere the OHM law which is given by:

V=R*I where R is the resistance and I the current, V is the voltage.

For the toaster heating the resistance must be equal

R=V/I=120/10= 12 Ω

We also know that R=ρ*L/A where L and A are the length and area of the wire.

Then the length of the wire is given by:

L=R*A/ρ= 12*π*(0.8*10^-3)^2/1.6*10^-6=15.10 m

Finally we can calculate the consumed energy  by the toaster heating during 5 minutes (5*60s=300 s).

The power is equal:

P=I*V= 10*120=1200 W

E= P*time (s)= 1200*300=360*10^3J

4 0
3 years ago
Read 2 more answers
Explain how a hydroelectric power plant converts energy stored in water into electricity
mart [117]
Hot water, as in very hot water, goes to steam with an enormous change in volume and pressure. This is capable of driving turbine blades, which in turn rotate enormous copper (eg) wired coils in enormous magnetic fields. This in turn produces electricity via electromagnetic induction and Fleming's right hand (I think it is) DYNAMO rule. That goes down miles and mile of v heavy conducting wire/cable as electricity.
4 0
4 years ago
a water line starts the service with an altitude of 1200m over the sea level, what is the velocity of the water above 1050 m ove
Ilia_Sergeevich [38]

Answer:

Velocity = 94.85m/s

Explanation:

<u>Given the following data ;</u>

Height = 1200m

Vertical distance = 1050m

To find the time, we would use the second equation of motion;

S = ut + \frac {1}{2}at^{2}

Substituting into the equation, we have;

1200 = 0(t) + \frac {1}{2}*9.8*t^{2}

1200 = 0 + 4.9*t^{2}

1200 = 4.9*t^{2}

t^{2} = \frac {1200}{4.9}

t = \sqrt{122.45}

t = 11.07 secs

To find the velocity;

Mathematically, velocity is given by the equation;

Velocity = \frac{distance}{time}

Substituting into the above equation;

Velocity = \frac{1050}{11.07}

Velocity = 94.85m/s

Therefore, the velocity of the water above 1050 m over the sea level is 94.85m/s.

7 0
3 years ago
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