Please Help!
1 answer:
The cost of the 1.4KW kettle is 0.945 p.
<h3>What is the cost of electricity?</h3>The cost of electricity is computed from the cost of electricity. We have to know the cost of electricity that is charged for the 1.4kW kettle.
Now let the power consumed=
1.4kW * 0.075 hrs = 0.105 KWhr
Then;
1 KWhr costs 9p
0.105 KWhr costs 0.105 KWhr * 9p/1 KWhr
= 0.945 p
Learn more about cost of electricity:brainly.com/question/16948772
#SPJ1
You might be interested in
Complete Question:
Football player A has a mass of 110 kg, and he is running down the field with a velocity of 2 m/s. Football player B has a mass of 120 kg and is stationary. What is the total momentum after the collision?
Answer:
Total momentum = 220 Kgm/s.
Explanation:
<u>Given the following data;</u>
For footballer A
Mass, M1 = 110kg
Velocity, V1 = 2m/s
For footballer B
Mass, M1 = 120kg
Velocity, V1 = 0m/s since he's stationary.
To find the total momentum;
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
a. To find the momentum of A;
Momentum A = 220 Kgm/s.
b. To find the momentum of B;
Momentum B = 0 Kgm/s.
c. To find the total momentum of the two persons;
Substituting into the equation, we have;
<em>Total momentum = 220 Kgm/s. </em>
Answer:
Explanation:
= Velocity of one lump =
= Velocity of the other lump =
m = Mass of each lump =
The collision is perfectly inelastic as the lumps stick to each other so we have the relation
The velocity of the stuck-together lump just after the collision is .