Answers
Answer:a
Explanation:
The throwback PFD is a Type III PFD. This type of PFD is designed for calm, inland water, or where there is a good chance of quick rescue. THe correct option is C.
Type III PFDs will not turn unconscious wearers to a face-up position, so the wearer may have to tilt their head back to avoid turning face down.
Type III PFDs have the same minimum buoyancy as Type II PFD. Float coats, fishing vests, and vests designed for various water sports are examples of Type III PFDs. Some Type III PFDs are designed to be inflated upon entering the water.
Offshore life jackets of Type I are suited for all areas, notably open, choppy, or isolated regions where rescue may be delayed and offer the highest buoyancy. Near-shore vests of Type II PFDs are designed for calm inland water or situations where there is a good probability of prompt rescue. Throwable PFDs of Type IV are suitable for usage in open water as well as calm, heavily used inland waters where assistance is always available. Special-purpose PFDs known as Type Vs are made for activities like kayaking and whitewater rafting.
The throwback PFD is not a Type I PFD because it does not provide the most buoyancy and is not designed for all waters. It is not a Type II PFD because it is not intended for calm, inland water or where there is a good chance of quick rescue. It is not a Type IV PFD because it is not intended for calm, inland water with heavy boat traffic, where help is always present. It is not a Type V PFD because it is not designed for specific activities such as kayaking or whitewater rafting.
Therefore, the correct option is C. type III.
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Related Questions
please i need detaailed explanation
This is a continuation of the first question.
Answers
Answer:
1Farahd
The equivalent capacitance in parallel 6F is now in series with
3F - 2F = 1F
Variations to the forehand stroke are not allowed. True False
Answers
What is the mass of a 600 gram object on the moon
Answers
9. A weather satellite is launched from the ground and placed in orbit six times farther away from the earth's centre. The gravitational field experienced by the satellite in orbit is the field that it experienced on the ground?
a Six times
b. One sixth of
c. Thirty-six times
d. One thirty-sixth of
Answers
Answer: d
One thirty-sixth of
Explanation: Gravitational field or gravitational field strength obeys the inverse square law. The gravitational field is inversely proportional to the square of the earth distance. That is,
g = Gm/r^2
Where r = distance.
If weather satellite is placed in orbit six times farther away from the earth's centre, gravitational field will be one thirty-sixth of its initial value.
Therefore, the gravitational field experienced by the satellite in orbit is one thirty-sixth of the field that it experienced on the ground.
A squirrel jumps down from a tall tree. Assuming the squirrel is in free fall,
how far will it have fallen in 1.3 seconds?
O A. 6.4 m
B. 13.2 m
O C. 8.3 m
O D. 11.1 m
Answers
d=.5 x g x t^2
G=9.8 meters per second
t=1.3 seconds
d=0.5×9.8×1.3^2
Answer is C. 8.3 m
Answer:
8.3 m
Explanation:
Together, two students exert a force of 825 N in pushing a car a distance of 35 m.
How much work do the students do on the car?
Answers
Answer:
28875 Joule
Explanation:
W = F * d
W = 825*35 = 28875 J
The work done by the students in pushing a car at a distance of 35 meters would be 28875 Joules.
What is work done?The total amount of energy transferred when a force is applied to move an object through some distance
The work done is the multiplication of applied force with displacement.
Work Done = Force * Displacement
As given in the problem Together, two students exert a force of 825 Newtons in pushing a car at a distance of 35 meters, then we have to find out the work done by the students,
The force exerted by the students = 825 Newtons
The distance moved by car = 35 meters
work done by students = 825×25
=28875 Joules
Thus, the work done by the students would be 28875 Joules.
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which of the following is equal to an impulse of 9 units
Answers
Answer:
force=2,time=4.5
Explanation:
Thats the answer
Liam is two-years old. His mother is concerned about his behavior. Liam is very different from how his sister Briana was when she was his age. He does not make eye contact. When she smiles at him, he doesn’t smile back. He doesn’t seem to like her hugging or kissing him. It seems that Liam has
Answers
Answer:
Autism
Explanation:
Those are some symptoms of autism that you described
Answer:
Autism is the answer
Frames of Reference Practice Solutions
A girl is on a train that is headed East at 100 miles per hour. The girl is walking at 5 miles per hour
toward the back of the train.
1.
What is the speed and direction of the train if the girls is the frame of reference?
Answers
Answer:
5 mph East.
Explanation:
If the girl is the frame of reference, we need to check the train's relative movement to the girl.
If the girl was not moving inside the train, the speed of the train would be zero, because the train and the girl would be moving together with the same speed and direction.
If the girl is moving 5 mph toward the back of the train, the movement of the train should be calculated considering the girl is fixed (not moving).
So the direction of the train movement would be the inverse of the girls movement (the girl is going West), then the speed and direction of the train is 5 mph and East.
Mechanical energy is..
A. Found in machinery only
B. usually measured at the atomic level
C. the sum of the chemical and thermal energy of an object
D. the sum of the kinetic and potential energy of an object
Answers
Answer:
D
Explanation:
Mechanical energy is all about movement
Also kinetic and potential energy are mechanical
Two bumper cars collide and then move away from each other. The forces exerted are:
A. Equal and opposite
B. Opposite
C. Equal
Answers
Answer:
the answer is b
Explanation:
if it was equal they would move away from each other
Question 10 of 10
2 Points
Which of the following best describes how the Federal Reserve Bank helps
banks during a bank run?
A. The Federal Reserve Bank acts as an insurance company that
pays customers if their bank fails.
B. The Federal Reserve Bank regulates exchanges to prevent the
demand for withdrawals from rising above the required reserve
ratio.
C. The Federal Reserve Bank has the power to take over a private
bank if customers demand too many withdrawals.
D. The Federal Reserve Bank can provide a short-term loan to banks
to prevent them from running out of money.
Answers
Answer:
D. The Federal Reserve Bank can provide a short-term loan to banks
to prevent them from running out of money.
Explanation:
A bank run occurs when a large number of depositors withdraw their deposits simultaneously from a bank.
As the number of withdraws increases, the available cash in the bank decreases until a point that the bank can't give depositors their money.
In these situations, The Federal Reserve Bank acts as a lender of last resort that helps to reinforce the effect of deposit insurance, and to reassure bank customers that they will not lose their money.
Which of the following is an example of a medium for a visible light wave?
A. air
B. electrons
C. green light
D. blinds on a window
Answers
Answer:
C. green light
Explanation:
Answer:
i think D
Explanation:
hope it helps
Which of the following statements best describes the second law of
thermodynamics?
A. Heat flows spontaneously from hot to cold, and entropy
decreases.
B. Heat flows spontaneously from hot to cold, and entropy increases.
C. Heat flows spontaneously from cold to hot, and entropy increases.
D. Heat flows spontaneously from cold to hot, and entropy
decreases.
Answers
Answer:
B
Explanation:
Heat flows from hot to cold to lower the temperature of hot areas and increase temperature of cold areas. The end result is that the 2 areas have the same temperature, thus increasing entropy.
Heat flows spontaneously from hot to cold, and entropy increases.
The second law of thermodynamics relates to the entropy of a system. According to the second law of thermodynamics, the total entropy of a system may increase or remain constant in a spontaneous process.
The implication of this is that the entropy of a system never decreases. The entropy of a system increases when heat flows from a hot to a cold body and not vice versa.
Hence, the statement that; "Heat flows spontaneously from hot to cold, and entropy increases" describes the second law of thermodynamics.
Which graph shows the correct relationship between kinetic energy and speed?
Answers
Answer: D
Explanation:
Kinetic energy = 1/2mV^2
From the formula above, we can deduce that kinetic energy is proportional to the square of speed. That is,
K.E = V^2
Graphically, the relationship isn't linear but a positive exponential. Therefore, option D is the correct answer.
Answer:
The correct answer is D.
Explanation:
Hope this helps.
Remembering the Battle of Bunker Hill what did general Howe and his troops do
Answers
Answer:
General Howe and the British regrouped after losing the hill.
Explanation:
British forces marched to Breed's Hill on 17 June under the order of Major General William Howe. When the British Army marched in waves toward the Americans, Colonel William Prescott issued orders to avoid the fire until British troops came to clear sight in an attempt to protect the dwindling supply of ammunition to the Americans. Many British soldiers have been killed or maimed; the remainder has withdrawn down the hill. In a second wave, the British stormed the hill once again but met with the same fate. So they withdrew again, suffering a large number of casualties. Eventually the British took the hill in the third attempt but at a great cost of casualties.
What are the characteristics of a gas ?
Answers
Answer:
c no definite shape and volume
The one that is the characteristic of gas is that it has no definite shape or definite volume. The correct option is A.
Gases have a number of distinctive characteristics. The fact that they don't have a set shape means that they can fit into and take on the shape of any container that they occupy.
Due to their high compressibility, gases can occupy a variety of spaces. Because of this, they lack a fixed volume.
Gaseous particles have the potential to disperse and diffuse because they are constantly moving, moving erratically and quickly.
Additionally, compared to liquids and solids, gases have lower densities. They also have traits like high thermal expansion and the capacity to mix and separate with ease.
Thus, the correct option is A.
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In charging by rubbing, electrons move from one material to another because
A. substances with very few neutrons have a net positive charge, so
they get the extra electrons.
O B. heavier substances get rid of electrons so they don't weigh as
much.
O C. the substance with the most protons steals electrons from the
other substance.
O D. some substances hold onto electrons tighter than other
substances, so they get the extra electrons.
Answers
Answer: D.
some substances hold onto electrons tighter than other
substances, so they get the extra electrons.
Explanation: When two substances are in contact by rubbing each other, there will be friction between them. The friction will stimulate what we called - Thermal energy. And what thermal energy does is the disrupt the bonding force or enhance it.
We can therefore conclude that some substances hold onto electrons tighter than other substances, so they get the extra electrons. Because at neutral state of the substance, the number of protons is equal to the number of electrons.
A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.5 seconds. Which one of the following choices best represents the acceleration of the car?
(A) 13.3 m/s2
(B) 9.8 m/s2
(C) 4.8 m/s2
(D) 3.7 m/s2
(E) 0.37 m/s2
please show work
Answers
Answer:
The acceleration of the car is [tex]3.7\ m/s^2[/tex].
Explanation:
It is given that,
Initial speed of the car, u = 0
Final speed of the car, v = 60 km/h = 16.66 m/s
Time, t = 4.5 s
We need to find the acceleration of the car. It is equal to the change in velocity divided by time taken. It can be given by :
[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{16.66-0}{4.5}\\\\a=3.7\ m/s^2[/tex]
So, the acceleration of the car is [tex]3.7\ m/s^2[/tex]. Hence, this is the required solution.
10. Almost three-quarters of household energy use is due to the following:
• home furnaces and air conditioners
• water heaters
• washers and dryers
• lighting
For each of these uses of energy, give two reasonable ways to reduce household
energy consumption
Answers
Answer: Energy consumption and sustainability is important so that it remain available for future generation.
Explanation:
1. The home furnaces are likely to require fuel like coal, which will directly emit carbon dioxide and carbon monoxide gases. These should be replaced with the electrical furnaces. The old or more power consuming air conditioners should be replaced with new ones.
2. The water heaters should be tankless so their capacity to heat more water could be possible. The water heaters should be electricity saving.
3. Washer and dryers should be water savy and electricity savy. A front-loading washing machine is useful energy saver.
4. The LED lights are more electricity saving than conventional bulbs. Halogen lights are also electricity saving.
Please help me find the last one ASAP! Thanks :))) (You don't have to send the definition)
Answers
F
R
I
C
T
I
O
N
can someone help m e
Answers
Answer:
A.when the distance is very close from the source
Explanation:
Answerwhen the distance is very close from the source
Explanation: A
Two vectors which do not lie along the same line represent what kind of
motion?
A. Resultant motion
B. Scalar motion
C. One-dimensional motion
D. Two-dimensional motion
Answers
The shape of an apple is considered what
Answers
the shape of an apple is considered a physical property
What is the velocity of a bobsled that travels 100 meters in 8.9 seconds in m/s
Answers
Answer:
11.2 m/s
Explanation:
Average velocity = displacement / time
v = 100 m / 8.9 s
v = 11.2 m/s
What is D ?
Its name the wave diagram.
B: Crest
A: Trough
C: wavelength
I think can someone check that. I think D might be amplitude but i don’t know.
Answers
Answer:
wave height ( H)
Explanation:
it is the total summation of crest and trough
How much blood does the average adult have
Answers
A washing machine heats 10kg of water in each wash cycle. How much energy is saved by washing at 30'c instead of 50'c if the starting temperature of the cold water is 16'c? The specific heat capacity of water is 4200 J/Kg'c
The two equations you can use is in the picture.
Answers
8.4 × 10⁵ Joules of heat energy can be saved assuming that there is no heat exchange between the washing machine and the environment.
What is Heat energy?Heat energy is the result of movement of tiny particles called as atoms, molecules, or ions in solids, liquids and gas substances. Heat energy can be transferred from one object to another object.
Let m denote the mass of water and the specific heat capacity of water. The energy required to raise the temperature of that much water by would be:
Q = m × c × ΔT
Washing at 30°C would require a temperature change of
ΔT = 30°C - 16°C = 14°C
Washing at 50°C would require a temperature change of
ΔT = 50°C - 16°C = 34°C
In both situations, c = 4.2 × 10³J.kg/ °C while m = 10kg.
Calculate the energy required in either of the situations as:
Washing at 30°C:
Q(30°C) = c × m × ΔT
Q = 4.2 × 10³J.kg/ °C × 10kg × 14°C
Q = 588000 Joules
Washing at 50°C :
Q (50°C) = c × m × ΔT
Q = 4.2 × 10³J.kg/ °C × 10kg × 34°C
Q = 1428000 Joules
1428000 Joules - 588000 Joules = 8.4 × 10⁵ Joules
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If 10,000 J of work was done to raise a 225 kg box, how high was the box raised?
Answers
Answer:
Explanation: Work=force×distance
W=F×S where W=10,000J, F=m×g=225 kg×10 N/kg= 2250 N
⇒S=W/F
= 10000/2250
= 4.44 m
The box will be raised 4.53 m
What is work done ?Work done is defined as the product of component of the force in the direction of the displacement and the magnitude of this displacement .
Work done = F .s = Fs cos (theta)
F = mg
s =h
theta = 0°
cos (theta) = cos 0 = 1
hence , work done = m*g*h
Potential energy is stored in the form of work done
potential energy = work done to raise the box = m*g*h
given
mass (m) = 225kg
work done(WD) = 10,000 J
height (h) = ?
potential energy = m*g*h
10,000 J= 225kg * 9.8m/s^2 * h
h = 4.53 m
The box will be raised 4.53 m
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What does Ohm’s law state?
A. Current equal voltage time resistance
B. Voltage equals resistance divided by current
C. Voltage equals current divided by resistance
D. Voltage equals current time resistance
Answers
Answer:
The answer is D
Explanation: