Answer:
Gravitational potential energy
Explanation:
The gravitational potential energy is the energy that an object has because of its positive with respect to a certain reference level (generally assumed to be the ground level).
The magnitude of the gravitational potential energy is given by
where
m is the mass of the object
g is the strenght of the gravitational field
h is the height of the object with respect to the reference level
From the formula, we see that the higher the object is, the larger its gravitational potential energy is.
Answer:
θ = 19.47°
Explanation:
given,
mass of the barge = 1000 kg
force applied to pull = 80 N
direction = 30° west to north
force exerted by the cable = 120 N
direction = ?
first cable is pulling
in north direction = 80 cos ∅
= 80 cos 30°
= 69.28 N
in west direction = 80 sin ∅
= 80 sin 30°
= 40 N
the other cable will pull in the opposite direction of west
now,
θ = 19.47°
the direction of the cable will be equal to θ = 19.47°
B. Have neutrons in their nuclei.
C. Have an equal number of electrons and protons
D. Have an equal number of neutrons and protons
Atoms have no electric charge because they have an equal number of electrons and protons.
Explanation:
So from this, we can conclude that atoms have no electric charge because they have an equal number of electrons and protons. Option C is correct.
Learn more about atoms here:
Răspuns:
1000 kg
Explicaţie:
Date date
t1 = 10 ° C
t2 = 293,15K = până la grad = 293,15-273 = 20,15 ° C
= 20 ° C aproximativ
Q = 418kJ = 418000J
c = 4180J / kg ° C
m =? Kg
Necesar:
Masa m în kg
Pasul doi:
Formulă:
Q = c * m * Δt
Q = c * m * (t2 -t1)
m = Q / c * (t2-t1)
Calculati:
m = 418000/4180 * (20-10)
m = 100 * 10 kg
m = 1000 kg
Answer: Increases the frequency of the wave
Explanation:
Increasing the tension of a spring means increasing its stiffness. The wave produced thereafter has greater frequency.
Higher tension causes the spring to have greater restoring force causing it to quickly come back to its equilibrium position. Thus, the speed of the wave also increases.