Answer:
They are spherical and hollow (not compact or dense)
Explanation:
An elastic collision is a form of a collision where kinetic energy and momentum are conserved in the process. When there is zero loss of kinetic energy and momentum, it is called a perfectly elastic collision.
This form of collision is observed in atmospheric gases and colliding balls which happens to be spherical and hollow.
Answer:
Solute
Explanation:
a solute is dissolved into a solvent to make a solution
<span>The screw gauge doesn’t have a zero error when the zero of the main scale coincides with the zero of the vernier scale or circular scale.
In case they don’t coincide then the instrument screw gauge is said to have a zero error which can be positive zero error or a negative zero error. In order to get an exact measurement, the error is added or subtracted from the value measured.</span>
Answer:
they both exert the same pressure
Explanation:
Pressure is the ratio of force to area. It is given as:
, where F is the force, P is pressure and A is area
1) For the cuboid, the area of the base placed on the ground (A) = 8 cm × 3 cm = 24 cm² = 0.0024 m². Therefore the pressure is:
2) For the cube, the area of the base placed on the ground (A) = 4 cm × 4 cm = 16 cm² = 0.0016 m². Therefore the pressure is:
Therefore, they both exert the same pressure.
Distance travelled in 4 hours...
730 - 442 = 288 miles
Speed for the 4 hours;
Speed = 288/4 = 72 miles/hour
Speed for the rest of 442 miles...;
(72 - 7) = 65 miles/hour
Time taken for 442 miles..
Time taken = Distance/Speed
; 442/65 = 6.8
Time taken = 6.8 hours
