Which characteristic does an object with a constant acceleration always have?A. changing velocity
B. constant velocity
C. fast speed
D. slow speed
Answers
By definition, speed is the integral of acceleration with respect to time.
We have then:
As the acceleration is constant, then integrating we have:
Where,
vo: constant of integration that corresponds to the initial velocity
We observe then that the speed varies linearly when the acceleration is constant .
Therefore, for constant acceleration, the velocity is changing.
Answer:
an object with a constant acceleration always have:
A. changing velocity
Answer. . .
A. Changing Velocity corresponds with acceleration.
Good luck on your studies, hope this helps~ ^//^
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Which of the following subsets of R³ are actually subspaces? (a) The plane of vectors (b1,b2,b3) with b1=b2 (b) The plane of vectors with b1=1 (c) The vectors with b1b2b3=0 .
SOMEONE PLEASE HELP WITH MY PHYSICS!!!! PLEASE HELP ME!!! I WILL GIVE BRAINLIEST!!!
An increase in which quantity will result in an increase in momentum?A).velocity B).force C).gravity D).distance
Conclusion When there is a constant unbalanced force applied in the same direction as the motion, speed will ___________________ and acceleration will _____________________________. When there is an increasing unbalanced force applied in the same direction as the motion, speed will ___________________ and acceleration will ________________________. When there is a constant unbalanced force applied in the opposite direction as the motion, speed will ___________________ and acceleration will ________________________. When there is an increasing unbalanced force applied in the opposite direction as the motion, speed will ___________________ and acceleration will ________________________.
Answers
Answer:
14.5 joules
50.5 %
Explanation:
Energy initial +work= energy final
28.7 + work = 14.2
friction did - 14.5 joules of work so percantage of work lost is just 14.5/28.7 *100 or 50.5 %
Answers
The mass of the piece of copper is equal to 121.2 g when its specific heat capacity is 0.385 J/g°C.
What is the specific heat capacity?
The specific heat capacity can be described as the amount of heat required to raise the temperature in one kilogram of a substance by one-degree Celcius.
The temperature of the material will change whenever the heat is absorbed or lost by it.
Q = mCΔT
Given, the amount of energy transferred, Q = 3500 J
The change in the temperature = 225 - 150 = 75 °C
The specific heat capacity of the copper, C = 0.385 J/g°C
The mass of the piece of copper for the given change in temperatures can be calculated as:
3500 J = m × (0.385 J/g°C) × 75°C
m = 121.2 g
Therefore, the mass of the piece of copper is equal to 121.2 g.
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Answer:
121 on edge 23
Explanation:
A. thumb in the direction of the electromagnetic force.
B. forefinger in the direction of the motion.
C. forefinger in the direction of the lines of force.
D. thumb in the direction of the magnetic flux.
Answers
Correct answer choice is:
C. forefinger in the direction of the lines of force.
Explanation:
The direction of the force - and consequently the transfer of the wire - can be defined by applying Fleming’s left-hand rule.
The forefinger tends to the direction of the magnetic field. The middle finger points in the course of the current. The thumb supplies the direction of force or movement working on the conductor. Fleming's Left Hand Rule is applied in electronic engines which are utilized in coolers, appliances, printers, etc.
501 cm3
1232 cm3
616 cm3
Answers
To solve this we assumethat the gas inside the balloon is an ideal gas. Then, we can use the ideal gasequation which is expressed as PV = nRT. At a constant pressure and number ofmoles of the gas the ratio T/V is equal to some constant. At another set ofcondition of temperature, the constant is still the same. Calculations are asfollows:
T1 / V1 = T2 / V2
V2 = T2 x V1 / T1
V2 = 308 K x 556 cm³ / 278 K
V2 = 616 cm³
Answers
Answer:
Psychiatrist prescribes medication for depression.
Explanation:
took the question
Answer:
A psychiatrist prescribes medication for depression.
Answers
Answer: 20 minutes
Explanation:
Given the following :
Average speed of train = 120km/hr
Distance = 40km.
The time take by the train moving at an average speed of 120km/hr to cover a distance of 40km due is ;
Recall:
Speed = distance / time
Therefore,
Time taken = distance covered / speed
Time taken = 40km / 120km/hr
Time taken = 1/ 3 hr
Therefore, 1/3 rd of an hour equals
1/3 × 60 = 20 minutes.
Time taken) 20 minutes
Time taken by tain to cover distance is 20 minutes as:
Distance= 40 km
Speed= 120 km/h
Time= distance/speed
= 40/120
= 1/3 hour
= 20 min
or =0.33 hrs
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