An electric heater carries a current of 19.5 A when operating at a voltage of 3.00 ✕ 102 V. What is the resistance of the heater?

A 190 g rock at 20°C is completely immersed in 600 g of water at 80°C. Which one of the following statements is true right after the rock goes in? A. The water gives the rock thermal energy and gets no thermal energy in return. B.

What two factors determine how bright a star appears to be in the sky?

1. Describe the conditions at altitude that could limit the ability to perform physical activity. 2. What types of exercise are detrimentally influenced by exposure to high altitude and why? 3.

A given amount of gas at 15 degrees Celsius has pressure P. What will be its temperature if the pressure becomes 3P, keeping volume constant

As the concentration of pollution particles in the atmosphere increases the amount of insulation that reaches the earths surface will most likely decrease increase or remain the same

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

What happens to particles when a substance gains energy and changes state?

The density of mercury is 13,600 kg/m³. Determine the mass of 10.0 cm³ of mercury.

A force of 250 N is applied to an object that accelerates at a rate of 10m/sec2. What is the mass of the object?

The grounded conductor and the grounding conductor are one and the same conductor and perform the same function.