Answer:
2.857 gm
Explanation:
<u>Step 1: Energy from uranium fission
</u>
The ratio of energy reeled from uranium to coal= 2.5 million times=2.5*10⁶
<u>step2: mass of uranium 235 required
</u>
To get the same energy that of 1 ton coal, the mass reuied will be = (1/2.5) * 10⁻⁶ ton=0.4 * 10⁻³ Kg
where we have taken 1 ton = about 1000Kg
<u>step3: mass of uranium
</u>
mass of u-235 = 70% of natural Uranium=0.7 Mu
So Mu= (1/0.7 )* mass of U-235=(0.4 * 10⁻³ Kg)/0.7=0.571 gm
<u>Step 4: Mass of ore
</u>
mass of Mu = 20% of ore=0.2 M
So, mass of ore= (1/0.2 )* mass of MU-=(0.571)/0.2 gm=2.857 gm
Answer: C.
)in the backyard with bright sunlight
Explanation: its better for the rose plant.
Answer:
Speed by walking is 33 miles per hour
And speed of by car is 88 miles per hour
Explanation:
We have given that it takes same time to walk 1212 miles as 3232 miles by car
Now let the speed by walk is x
As speed by car is 55 miles per hour faster than by walk = x+55
As time is same and we know that time is given as 
So 
x = 33 miles per hour
So speed by walking is 33 miles per hour
And so speed of car = 33+55 =88 miles per hour
Two objects in physical contact with each other are in thermal equilibrium when they reach the same temperature and an exchange of heat energy no longer occurs.<span> According to HyperPhysics, the relation of thermal equilibrium follows the Zeroth Law of Thermodynamics, which states that “if two systems are at the same time in thermal equilibrium with a third system, they are in thermal equilibrium with each other.” </span>
Answer: all the energy is rushed in the wires due to the swich turning on when touching it may start a fire or electricute
Explanation:
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