Question

A spider rests in a nest shaped in a horizontal plane with 12 knots in a row at the edges. each knot makes an angle of 30° with the horizontal. if the mass of the spider is 6 grams and it rests at the center of the circle. A. Diagram Describe the insect free body b. what is the center of tension in each knot? C. the components of the x-axis and y-direction forces on each knot d. if the insect catches prey twice the mass of the spider and the knot is considered inelastic, again like B and C​

Answer 1

Answer:

Charcoal burns in air to give carbon dioxide and heat.

C + O2 → CO2 + Heat

(b) Methane bums in air forming carbon dioxide, water and heat.

CH4 + 2O2 → CO2 + 2H2O + Heat

Test Yourself

1. Which of the following is combustible?

(a) Iron nail

(b) Glass

(c) Stone pieces

(d) Paper

2. Combustion is a

(a) physical process

(b) chemica

(c) Both (a) & (b)

(d) None