A team of engineers is designing a new anti-collision device for cars. The device is intended to reduce the chance of collisions between cars.
Which step would be MOST appropriate after the design is ready?
es )
A)
Fitting the device on a wide variety of road vehicles
B)
Testing the device on model cars in laboratory conditions
Studying existing data on accidents involving automobile collisions
D)
Comparing the performance of the device with that of other similar devices

It’s B. testing the device on model cars in laboratory conditions

Explanation: Using real cars can just cause more actual accidents if the device doesn’t work.

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.