19

Physics

2 answers:

Ymorist [56]3 years ago

7 0

Answer:C

Explanation:

Carbon dioxide is the most abundance greenhouse gas in The atmosphere.

Tema [17]3 years ago

6 0

Carbon dioxide is the most abundant greenhouse gas in the atmosphere.

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A wavelength is the distance between two

pentagon [3]

C. crests. The wavelength is the distance between two specific parts of a wave. This might also be the trough.

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4 years ago

Calculate the rate of acceleration of a 2,000.-kilogram truck if a force of 4,200 N is used to make it start moving forward?

Llana [10]

Answer:

Acceleration, $a=2.1\ m/s^2$

Explanation:

Given that,

Mass of a truck, m = 2000 kg

Force used to move the truck, F = 4200 N

We need to find the acceleration of the truck. The force acting on the truck is given by the expression as follows :

F = ma

a is the acceleration of the truck

$a=\dfrac{F}{m}\\\\a=\dfrac{4200}{2000}\\\\a=2.1\ m/s^2$

So, the acceleration of the truck is $2.1\ m/s^2$ .

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3 years ago

What is the average power consumption in watts of an appliance that uses 5.00 KW.h of energy per day?

abruzzese [7]

(A) power = 0.208 kW = 208 watts
(B) energy = 6.6 x 10^{9} joules

Explanation:
energy consumed per day = 5 kWh
(a) find the power consumed in a day
1 day = 24 hours
power = \frac{energy}{time}
power = \frac{5}{24}
power = 0.208 kW = 208 watts

(b) find the energy consumed in a year
assuming it is not a leap year and number of days = 365 days
1 year = 365 x 24 x 60 x 60 = 31,536,000 seconds
energy = power x time
energy = 208 x 31,536,000
energy = 6.6 x 10^{9} joules

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3 years ago

4. What is the efficiency of a pulley that does 571 J of work if the input work is 1,694 J?

kvasek [131]

Explanation:

Efficiency = work out / work in

e = 571 J / 1694 J

e = 0.337

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4 years ago

A ball is thrown horizontally from the top of a building 54 m high. The ball strikes the ground at a point 35 m horizontally awa

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