Which equation would you need to rearrange to calculate the specific heat of an object
Answers
Specific heat = heat/ (mass×change in temperature)
Related Questions
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A dolphin leaps out of the water at an angle of 36.6° above the horizontal. The horizontal component of the dolphin's velocity is 7.87 m/s. Calculate the magnitude of the vertical component of the velocity.
Help me with this problem please? c:Which appliance uses more energy? A.) a 30-watt CD player used for 3 hours (10,800 seconds) B.) a 300-watt blender used for 2 minutes (120 seconds) C.) a 1,500-watt hair dryer used for 3 minutes (180 seconds) D.) a 200-watt computer used for 10 hours ( 36,000 seconds)
A fan uses 7A when connected to a 110V line. If electric power costs 10 cents per kilowatt-hour in this location, what is the cost of running the fan for 13 hours?
c. gravitational potential energy
b. chemical potential energy
d. electrical energy
Answers
Gravitational potential energy is a form of mechanical energy.
What is Gravitational potential energy?
Gravitational potential energy is the energy possessed or acquired by an object due to a change in its position when it is present in a gravitational field.
If an object is at rest and doesn't involve elastic energy, then mechanicalenergy can be equal to gravitational potential energy.
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Negative peer pressure
Positive peer influence
Negative peer influence
Answers
negative peer influence
Answers
The word momentum means mass and velocity taken together.
What is mass ?
Mass is an intrinsic basic physical quantity which tells us about the amount of matter contained in a body. It is a scalar quantity and it is measured in kilogram(Kg).
What is Velocity?
Velocity is the rate of change of displacement . It is defined as displacement per unit time. It is a vector quantity and measured in meter per second (m/s)
What is momentum?
The product of mass and velocity is momentum. When a body possesses both mass and velocity we say that it has momentum. It is a vector quantity. Its unit is kg m/s
Mathematically we write momentum as,
P = mv
Mathematically we write momentum a
Where, P = momentum
m = mass
v= velocity.
When a force is applied on a body, it changes its momentum. The relationship between force and momentum is given by Newton's second law of motion which states that the rate of change of momentum is directly proportional to the force applied,
F = Δp /Δt
Where F= force
Δp = change in momentum
Δt = time taken for the change in momentum to occur.
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Answer:
In my mind when I hear the word momentum it comes that it is the product of mass and velocity.
Answers
Answer:
The work done and power are 60000 Pounds-feet and 3000 Pounds-feet/sec.
Explanation:
Given that,
Force F = 1500 pounds
Distance d = 40 feet
Time t = 40 sec
Work done :
The work done is the product of the force and distance.
The work done is defined as,
Where, W = work
F = force
d = distance
Put the value into the formula of work
Power:
The power is equal to the work done divided by time.
The power is defined as,
Where, P = power
W = work
t = time
Put the value into the formula of power
Hence, The work done and power are 60000 Pounds-feet and 3000 Pounds-feet/sec.
power = w/t = (1500 x 40) / 20
Answers
Answer:
the answer is 3000
Explanation:
power=mass×gravity×height or (divided by /Time)
so 100kg×10×60m/20s
=60,000/20
=3000joule
if I am wrong correct me
b. increase the area over which the person’s weight is distributed.
c. increase the pressure on the snow.
d. increase the buoyancy of the person.
Answers
Answer:
Option B is correct.
Explanation:
Snowshoes has large area of crossection.
As a person wears the snowshoes, the weight of the person distributed over a large area and thus the pressure exerted by the surface due to the weight of the person is less.
The relation among pressure, force and area of crossection is given below.
As area of crossection is large, pressure is small and thus the person walk on deep snow.