A car travelling at a constant speed of 70km/h passes a stationary police car. The police car immediately gives chase, accelerating uniformly to reach a speed of 85km/h in 10s and continues at this speed until it catches the other car. (A) Find the time taken for the police car to catch up with the Car. (B) Find the distance travelled by the police car when this Happens.

We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canary’s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg.k and density of air is 1.16 kg/m3 . assume the canary’s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.

Identify some abiotic characteristics of the tundra biome.

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem