The average human heart Beats 1.15 times 10 to the power of 5 per day. There are 3.65 times 10 to the power of 2 days in one year. How many times does your heart beat. Write your answer in scientific notation, and round to one decimal place
Answers
Answer:
4.2·10⁷
Explanation:
Exponents are added when multiplying:
(a^b)(a^c) = a^(b+c)
1.15·10⁵ × 3.65·10² ≈ 4.2·10⁷
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Your calculator is designed to work with scientific notation. Scientific or graphing calculators can also display their output in scientific notation. A spreadsheet can also perform this calculation for you and display the result in the required format.
Calculators and spreadsheets sometimes use "E" in place of "×10^". That is, 4.2E7 means 4.2×10^7.
Related Questions
Which of the following is an easy way to remember the modified “X” tire rotation?
A. Nondrive wheels straight, cross the drive wheels
B. Drive wheels straight, cross the nondrive wheels
C. Drive wheels crossed, nondrive wheels straight
D. Drive wheels crossed, nondrive wheels crossed
Answers
Answer:
B. Drive wheels straight, cross the non-drive wheels
Explanation:
This can be shortened to "cross to drive". This rotation pattern only applies to non-directional tires.
If tires have a preferred rotation direction, they can only be swapped front-to-rear (and vice versa) on the same side of the vehicle, so the rotation direction does not change.
The modified “X” tire rotation is easily remembered as moving the nondrive wheels straight, and crossing the drive wheels. It involves moving the front tires straight back to the rear while the rear tires move to the opposite front sides, forming an “X” pattern in their movement.
Explanation:The easy way to remember the modified “X” tire rotation is to memorize option A: Nondrive wheels straight, cross the drive wheels. This method involves moving the front tires straight back to the rear, while the rear tires are moved to the opposite sides of the front. Essentially, you create an “X” pattern with the tires’ movement. This rotation pattern is helpful in maintaining an even wear on all tires, which can extend their lifespans.
Learn more about “X” tire rotation here:
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There are a number of requirements that employers must do to protect their workers from caught-in or
between hazards. Which of these is required if the worker's body, hands or clothing may come into contact
with moving parts?
O A Prevent workers from being pinned under heavy equipment
O B. Provide guards on power tools and other equipment with moving parts
O C. Provide protection to workers in an excavation or trench
OD. Protect workers from collapsed scaffolding
Answers
Answer:
B.Provide guards on power tools and other equipment with moving parts
Explanation:
A guard/ safeguard is a machine feature that is on/around an engineering equipment which can prevent the contact of a user with hazardous parts of the machines such as point of operation and rotating parts.The guard can be on power tools to enable an alternataive ways of switching off the equipment when a danger scenario occurs.When using a tool/equipment, safeguards must be on/active.
4. Which of these is NOT a safe skill to employ in the presence of road
workers?
U
A. Keep alert and watch out for construction barrels or cones
B. Slow down even if you don't think you'll hit a road worker
C. Drive at the posted speed limit
D. Keep as much distance as you can while navigating around them
Answers
An action which isn't a safe skill to employ in the presence of road workers is to: C. drive at the posted speed limit.
What is a speed limit?A speed limit can be defined as the maximum amount of speed that is permitted or allowed in a specific area. Thus, this limit must be abided and adhered to by all road users such as drivers.
In this context, driving at the posted speed limit is an action which isn't a safe skill to employ in the presence of road workers because the conditions of the road are not optimum or the best.
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Two technicians are discussing scan-tool use. Technician A says that a special diagnostic interface device is needed to connect the vehicle to the laptop computer. Technician B says that all of the computers in a modern vehicle are connected through an SAE-standard J1939 CAN (Central Area Network) or LAN (Local Area Network) connection. Who is correct?
A. Technician B only
B. Neither Technician A nor B
C. Both Technicians A and B
D. Technician A only
ANSWER: Both technicians are correct, I have taken the test.
Answers
Answer:
both technicians are correct, I haven't taken the test
Answer:
C. Both Technicians A and B
Explanation:
C. Both Technicians A and B because the reason given are correct. Technicians A reason is a olden method while Technician B method is new and can work for modern vehicle.
Which of the following kinds of ocean pollution is an example of point source pollution? Cooling water from a shoreline power plant Fertilizers from suburban lawns Pesticides from agriculture Trash that is washed down storm drains Road oil residue from automobiles
Answers
Answer:
Cooling water from a shoreline power plant
Explanation:
Out of all of these options it is the only one coming from a single source hence the name point source pollution
A 13-L kerosene tank (ρ = 820 kg/m3) is filled with a 2-cm-diameter hose equipped with a 1.5-cm-diameter nozzle meter. If it takes 18 s to fill the tank, determine the pressure difference indicated by the nozzle meter. The pressure difference indicated by the nozzle meter is kPa.
Answers
Answer:
what exactly are you asking I'm confused
Communication "works" to the degree that a wide variety of information is completely and thoroughly shared among the parties, and mutual understanding is reached.
Answers
Answer:
Hook's law holds good up to. A elastic limit. B. plastic limit. C.yield point. D.Breaking point
Which one of the following faults cause the coffee in a brewer to keep boiling after the brewing cycle is finished?
A. An open circuit in the heating element
B. A short circuit at the terminals
C. Welded contacts on the thermostat
D. A leak around the gasket
Answers
Answer:
C. Welded contacts on the thermostat
Explanation:
Any fault that keeps the heating element heating when it should not is a fault that will cause the symptom described. The details depend on the design of the brewer (not given).
"A short at the terminals" depends on what terminals are being referenced. The device on-off switch terminals are normally connected together when the brewer is turned on, so a short there may not be observable.
"Welded contacts on the thermostat" will have the observed effect if the thermostat is the primary means of ending the brewing cycle. If the thermostat of interest is an overheat protective device not normally involved in ending the brewing cycle, then that fault may not cause the observed symptom.
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If the heating element is open-circuit, no heating will occur. A gasket leak may cause a puddle, but may have nothing to do with the end of the brewing cycle. (Loss of water can be expected to end boiling, rather than prolong it.)