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2 years ago

9

at a certain moment, an object has an amount of 200 of motion energy and 400 of gravitational potential energyThe object is also

sliding on a rough surface that causes of energy to be converted as a heatHow much is the total energy of the object?

1 answer:

Radda [10]2 years ago

8 0

Answer:

twice as much energy

Explanation:

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10. With a class 1 lever, does mechanical advantage increase or decrease as the fulcrum is moved closer to the load? Explain why

Kitty [74]

Answer:

Class 1 Levers: Moving the fulcrum closer to the load will increase the mechanical advantage. Moving the effort farther from the fulcrum will increase the mechanical advantage.

Explanation:

Hope it helps you

3 0

3 years ago

If x2 = 60, what is the value of x? plus or minus square root 30 plus or minus square root 60 ±30 ±120

Zielflug [23.3K]

X2 = 60
/ 2 / 2
x = 30
Plus or minus square root 60

4 0

3 years ago

a boy standing by a lake sees a fish in the pond and tries to thrust a spear into it he will success or not

almond37 [142]

Answer:

yes

Explanation:

8 0

3 years ago

Read 2 more answers

A Carnot heat engine has an efficiency of 0.200. If it operates between a deep lake with a constant temperature of 293.0 K and a

Dimas [21]

Answer:

366 K

Explanation:

T₀ = Constant Temperature of deep lake = 293.0 K

T = Temperature of hot reservoir connected to carnot engine = ?

η = Efficiency of Carnot engine during the operation

Efficiency of Carnot engine is given as

$\eta = 1-\frac{T_{o}}{T}$

Inserting the values

$0.200 = 1-\frac{293.0}{T}$

T = 366 K

3 0

4 years ago

You hold a small metal ball of mass a height above the floor. You let go, and the ball falls to the floor. Choose the origin of

baherus [9]

Answer:

yᵢ = h

vᵢᵧ = 0

Explanation:

Let initial velocity = u

final velocity = v

height = h

acceleration due to gravity = g

Therefore fro equation of motion,

$v^{2}=u^{2}+2gh$

Here initial velocity is zero.

Hence, $v^{2}=2gh$

$v = \sqrt{2gh}$

but since it points downward and you positive is taken in the up direction

$v = -\sqrt{2gh}$

5 0

4 years ago