Answer:
Explanation:
A galvanometer which is used for the measurement of a very small current can be converted to a voltmeter when it is connected to a high resistance or a multiplier is a series. The purpose of this is to reduce the amount of current that goes through the galvanometer so as prevent full scale deflection.
The surface of the bottom of the ship is wider so its more boyant to float. A nail is small so it'll sink.
Answer:
The culture of the patient, also known as the consumer of mental health services, influences many aspects of mental health, mental illness, and patterns of health care utilization. One important cautionary note, however, is that general statements about cultural characteristics of a given group may invite stereotyping of individuals based on their appearance or affiliation. Because there is usually more diversity within a population than there is between populations (e.g., in terms of level of acculturation, age, income, health status, and social class), information in the following sections should not be treated as stereotypes to be broadly applied to any individual member of a racial, ethnic, or cultural group.
Explanation:
Answer:
a) v2f = 1.2 m/s, b) h = 7.35 10⁻² m and c) ΔK = -4196.4 J
,
Explanation:
a) This problem must be solved with the conservation of the moment. Let's define the system as the one formed by the bullet plus the block, in this system all the forces are internal therefore the moment conserves, let's write the moment in two moments before and after the crash. In general these shocks are very fast, so it can be assumed that the box does not move during the crash.
The data they give us is the mass of the bullet (m = 0.010 kg), the initial and final velocities of the bullet (v1o = 1000 m / s and v1f = 400 m / s) and the block gives us the mass M = 5 kg and its initial velocity v2o = 0 m / s
Before the crash
po = m v₁₀
After the crash
pf = m
+ M ![v_{2f}](https://tex.z-dn.net/?f=v_%7B2f%7D)
p₀ = pf
m v₁₀ = m
+ M ![v_{2f}](https://tex.z-dn.net/?f=v_%7B2f%7D)
v2f = m (v₁₀ -
) / M
v2f = 0.010 (1000-400) / 5
v2f = 1.2 m / s
b) Having the speed of the block we can use the law of conservation of energy to find the height. Let's write the mechanical energy of the block just after the crash and at the point of maximum height
Initial. Just after the crash
v = ![v_{2f}](https://tex.z-dn.net/?f=v_%7B2f%7D)
Em1 = K = ½ M v²
Final. At maximum height
Em₂ = U = M g h
Em₁ = Em₂
½ M v² = M g h
h = ½ v² / g
h = ½ 1.2² / 9.8
h = 0.0735 m
h = 7.35 10⁻² m
c) Let's calculate the kinetic energy before and after the crash
Before
K₀ = ½ m v₁₀²
K₀ = ½ 0.01 1000²
K₀ = 5000 J
Final
= ½ m v1f² + ½ M v2f²
= ½ 0.010 400² + ½ 5 1.2²
= 800 + 3.6
= 803.6 J
We can give the amount of energy that is lost as the subtraction of the two energies or as the fraction of lost engoa
ΔK =
-K₀
ΔK = 803.6 - 5000
ΔK = -4196.4 J
/ K₀ = 803.6 / 5000
/ K₀ = 0.16
Answer with explanation:
Electronegativity is a property that enables atoms to attract bonding electrons to each other.
The higher the electronegativity, the greater an atom's attraction for electrons.