Answer:
Explanation:
As we know that first ice will convert into water
then water will heat to 100 degree celcius and then it will converted into vapor and then its temperature is raised to 110 degree C
First we will find the heat to take the ice at 0 degree and then convert it into water
Now heat required to take it to 100 Degree then convert into vapor and then raise temperature to 110 degree
So total heat required is given as
Answer:
The weight of the wheelbarrow and the road is 784 N and the force required to lift the wheelbarrow is 784 N.
Explanation:
Given that,
The total mass of the wheelbarrow and the road is 80 kg.
The weight of an object is given by :
W = mg
where
g is acceleration due to gravity
So,
W = 80 × 9.8
= 784 N
So, the force required to lift the wheelbarrow is equal to its weight i.e. 784 N.
Answer:
Explanation:
Rocks tell us a great deal about the Earth's history. Igneous rocks tell of past volcanic episodes and can also be used to age-date certain periods in the past. Sedimentary rocks often record past depositional environments (e.g deep ocean, shallow shelf, fluvial) and usually contain the most fossils from past ages.
Answer:
leverage
Explanation:
Leverage ...this allows you to use less force through a longer distance
W = Fd = 4(2100) = 8400 J
So the answer is A) 8400 J
I was just rewriting my notes on the work lesson I did in class today, so I saw this question at the perfect time!! :)
Hope it helps!! :)
