<span>Corrugated cardboard ignites at 800°F (427°C).
</span>Hope this helps!
The element must expose to oxygen
Answer:
The range of the projectile is 60 meters
Explanation:
To determine the range/distance of the projectile, the formula for velocity is used;
velocity = distance/time
where velocity is 15 m/s
time is 4 seconds
distance is unknown
From the formula above, distance is made the subject and thus
distance = velocity × time
distance = 15 × 4
distance = 60 m
The range of the projectile is 60 meters
Answer:
Explanation:
Exact numbers are those numbers which are known with 100% certainty or accuracy . Numbers having decimal are generally not exact because they are a part of long drawn decimal number after rounding off to certain places after decimal.
On the basis of this definition we can say as follows
speed of light is 2.99792 ×108 . Here the number quoted is not an exact number because it is a rounded off figure of speed of light to five digits after decimal .
Similarly density of mercury too is rounded off to two digits after decimal
so it is also not a exact number.
There are 3600 s in 1 h . Here 3600 s is an exact number because one hour has been defined as 3600 s . It is not measured by any instrument.
In 2003, the United States had 50 states. Here 50 is an exact number .
<span>The drag force acts opposite to the direction the cars' motion and the propelling force is in the direction of the motion. These are the two forces acting on the car and since they are both equal and opposite in direction, they cancel out each other. Thus, the car is able to move at a constant speed without changing its direction or momentum.</span>
