The following chart provides the ph of some common foods. how many would be considered basic? food ph food ph tofu 7.20 tomatoes 4.50 walnuts 5.42 apples 3.50 asparagus 6.50 blueberries 3.15 cranberry juice 2.40 egg white 7.96 egg yolk 6.10 concord grapes 2.80

Answer is: Two would considered basic (tofu, egg white).

pH (potential of hydrogen) is a numeric scale used to specify the acidity or basicity an aqueous solution.

When pH is less than seven (pH<7), solution is acidic In this example tomatoes, walnuts, apples, asparagus, bluberries, cranberry juice, egg yolk and concord grapes.

When is equal seven (pH = 7), solution is neutral.

When pH is greater than seven (pH > 7), solution is basic.

When pH is less than 7 the solution is acid

When pH is greater than 7 the solution is basic.

so the correct answer is 2.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied

the answer is symmetrical : )