The game "Whack-a-Mole", in which the player must "whack" randomly appearing moles with a hammer as quickly as possible when the
1 answer:
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<span>At where:
Q = amount of sensible heat (cal or J).
C = specific heat of the substance constituting the body (cal / g ° C or J / kg ° C).
M = body mass (g or kg).
Δθ = temperature variation (° C).
T = final temperature
To = Initial temperature
Data:
Q = 10 calories
M = 2 grams
C (ice)= 0.550 cal / g ° C
To = -30 ° C
T =?
Formula: Q = m * c * Δθ
Resolution:
Substitute
Q = m * c * Δθ
10 = 2 * 0.550 * [T-To]
10 = 1.1 * [T-(-30)]
10 = 1.1 * [T+30]
10 = 1.1T + 33
-1.1T = 33 - 10
-1.1T = 23 .(-1)
1.1T = - 23
T = </span>
T ≈ - 20.90 ° C (the final temperature of the ice)
Complete Question
The complete question(reference (chegg)) is shown on the first uploaded image
Answer:
The magnitude of the resultant force is
The direction of the resultant force is from the horizontal plane
Explanation:
Generally when resolving force, if the force (F )is moving toward the angle then the resolve force will be while if the force is moving away from the angle then the resolved force is
Now from the diagram let resolve the forces to their horizontal component
So
Now resolving these force into their vertical component can be mathematically evaluated as
Now the resultant force is mathematically evaluated as
substituting values
The direction of the resultant force is evaluated as
substituting values
from the horizontal plane
