Answer:
a) 1.5 × 10² kPa
b) 16.9/8.1
Explanation:
a) The pressure of the front tires is 22 psi. The appropriate conversion factor is 1 psi = 6.89 kPa. The pressure of the tires in kPa is:
22 psi × (6.89 kPa / 1 psi) = 1.5 × 10² kPa
b) Regarding the blood pressure, the minimun reading is 61 mmHg and the maximum reading is 127 mmHg. The appropriate conversion factor is 1 kPa = 7.50 mmHg. The blood pressure in kPa is:
61 mmHg × (1 kPa / 7.50 mmHg) = 8.1 kPa
127 mmHg × (1 kPa / 7.50 mmHg) = 16.9 kPa
Answer:
The centre of sphere of part of which a lens is formed is called the centre of curvature of the lens.
Complete question:
Driving in your car with a constant speed of v= 22 m/s, you encounter a bump in the road that has a circular cross-section, as indicated in the figure.
If the radius of curvature of the bump is 52 m, find the apparent weight of a 68-kg person in your car as you pass over the top of the bump.
Answer:
the apparent weight is 34 N
Explanation:
Given:
radius of curvature of the bump = 52 m
mass of the person = 68 kg
Apparent weight of the person due to centripetal acceleration which acts inward, is calculated as follows;
From Newton's second law of motion, apparent weight =
Therefore, the apparent weight is 34 N
Answer:
He can use the hot plate to heat the substances and use the thermometer to measure the temp and use the stopwatch to make sure they are heated for the same amount of time.
Explanation: