PHYSICS HIGH SCHOOL

Which statements about acceleration are true?Check all that apply.

A. The symbol for acceleration is .
B. For acceleration, you must have a number, a unit, and a direction.
C. To calculate acceleration, divide the change in velocity by the change in time.
D. The SI units for acceleration are miles per hour per second.

Answers

Answer 1
Answer: C is the correct answer, hope it helps

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brad rides his bike 20 km . he covers the distance in 45 minutes (0.75 hours) what is his speed in kilometers per hours ? a. 44 km/hr b. 15 km/hr c. 9.0 km/hr d. 27 km/hr
An object of mass 2 kg has a linear momentum of magnitude 6 kg • m/s. What is this object’s kinetic energy?
Heated air rises, cools, then falls. Air near the heater is replaced by cooler air, and the cycle repeats. A) Conduction B) Convection C) Radiation
A hair curling iron uses 13 watts of power. how long must it operate to do 1,040 joules of work?
A pickup truck is carrying a toolbox, but the rear gate of the truck is missing. The toolbox will slide out if it is set moving. The coefficient of static and kinetic friction between the box and the level bed of the truck are 0.300 and 0.200, respectively. What is the greatest acceleration that the truck can have before the toolbox slides out?

The heat capacity of an object depends in part on its _____. A. mass B. enthalpy C. shape D. potential energy

Answers

The correct answer to the question that is being presented above would be letter A. mass. The heat capacity of an object depends in part on its mass. All the other choices do not fit the description that needs to be answered.

Which of the following is the correct unit for time when calculating power in watts?a. hours
b. minutes
c. days
d. seconds

Answers

Which of the following is the correct unit for time when calculating power in watts?

The correct unit for time when calculating power in watts is seconds. The answer is letter D. The rest of the choices do not answer the question above.

If a certain gas occupies a volume of 12 l when the applied pressure is 6.0 atm , find the pressure when the gas occupies a volume of 3.0 l .

Answers

From Boyle's law, the volume of a fixed mass of a gas is inversely proportional to its pressure at constant absolute temperature. 
Therefore; P1V1 =P2V2; where PV is a constant
hence; 12 × 6 = 3× p2
           p2 = 72/3
                = 24 atm
Therefore; the new pressure will be 24 atm

Each step in any energy conversion process will _____. gain energy create energy dissipate energy destroy energy

Answers

The correct answer is to dissipate energy. Each step in any energy conversion process will dissipate energy. The energy conversion is the process in which a form of energy is being converted into a new or another form of energy.

The correct answer to the question is : Energy dissipate.

EXPLANATION:

Before coming into any conclusion, first we have to understand law of conservation of energy.

As per law of conservation of energy, energy can neither be created nor be destroyed. It can only change from one form to another form, and the total energy of the universe is always constant.

As per the question, there is energy conversion. One form of any energy may be converted into various types of energy. One particular type of energy is not obtained always.

Hence, the correct answer to the question is energy is dissipated during energy conversion.

Please help me! Those who love cars and motorcycles I think you can help me there is a kawasaki H2R 236hp; 217kg
a Mac Laren:625hp; 1375kg
a Bugatti 1100hp; 2136kg
and a 1350hp Nissan GTR; 1650kg
Which car will be able to reach 320km/h before the motorcycle?
The Data:
The power associated with one horsepower is 735.5 watts

Answers

The only vehicle capable of outpacing the Ninja H2R out of the box was the severely tuned, 1,350 horsepower SPE Nissan GT-R, which caught and passed the superbike at the.

Which is faster, the Kawasaki Ninja H2R or the Bugatti?

Slowly coming off the line, the biker eventually catches up with and surpasses the Veyron.When the H2R triggers the speed camera at 194.5 mph—nearly 15 mph faster than that of the Bugatti—it is still harsh in acceleration.

A bike is faster than a Lamborghini, right?

The bike easily overtakes the Lamborghini after another strong start from the latter.In comparison, the Huracan needs 9.6 seconds to finish the quarter mile.

To know more about horsepower visit:

brainly.com/question/13259300

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A mass of gas under constant pressure occupies a volume of 0.5 m3 at a temperature of 20°C. Using the formula for cubic expansion, what will be the volume at a temperature of 45°C without a change in pressure?

Answers

p1v1/t1 = p2v2/t2
p(0.5 m^3)/(20+273 K) = pv2/(45+273 K)
find v2
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