What is the apparent power of anAC circuit with a source voltage of 240V and a total current of 15A? 1.200W 2.400W 3.600W 7.200W
5. Two rods one made of brass and other made of copper are to be joined end to end. The length of the brass section is 0 .2 meters long. The length of the copper section is 0.7 meters long. Both rod sections have cross section of 0.004 square meters . The free end of the brass segment is in boiling water. The free end of the copper section is in an ice -water mixture. The pressure is one atmosphere for both rods The sides of the rods are insulated perfectly. No heat can leave the sides of the rods over the length of the rods.Please calculate the temperature of the point where the two rods are connected . Thank you.
Glass beads need to be placed in the balance tube when analyzing ; low surface area materials (one meter squared per gram or less). True False
Where would the gravitational force be the greatest? A At the beach on the East Coast C All the top of I a mountain At the bottom of the ocean B At the surface of the moon
Where does the ball feel the MOST centripetal force? Closest to the center It does not matter where the ball is , the same force is applied. Farthest from the center
A flat straight line shows the object's velocity is a. Increasing b. Decreasing c. Staying the same d. Has stopped
The event horizon of a black hole marks the inner boundary of a planetary nebul is a crystalline layer. is believed to be a singularity. has a radius equal to the Schwarzschild radius.
The amount of heat in an arc flash will instantly vaporize copper and expand it __ times its original volume. 54,000 74,000 64,000 44,000
Solid forms of ice last longer because there is more weight with less surface area. True False
The pressure you apply to the gas pedal is known as what? velocity force motion
Convert 810 mmHg to kPa. 6.16E5 kPa 760 kPa 1.14 kPa 107.9 kPa
Which one is Newton's second law of motion? The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. The acceleration of an object as produced by a net force is inversely proportional to the magnitude of the net force, in the same direction as the net force, and directly proportional to the mass of the object. $F=\frac {m}{a}(\frac {m}{s^{2}})$ $F=\frac {a}{m}(N)$
What is the best estimale of the mass of a cupcoke? A 80 pounds 80 grams C 80 tons kiloaroms
Describe how voltage, current and resistance behave in a parallel circuit. Edit View Insert Format Tools Table $\square $
A lead ball has a mass of 55 .0 grams and a density of $11.4g/cm^{3}$ What is the volume of the ball? 4.82 mL 0.207 L 4.82 L 0.207 mL none of the above
Question 3. Three unmarked bar magnets are tested in pairs at their ends. The following observations are made: - Magnet A and Magnet B attract each other. - Magnet A and Magnet C repel each other. - Magnet B and Magnet C repel each other. Which of the following statements can be determined from these results alone? A. Magnets A and B have like poles near each other. B. Magnets A and C have like poles near each other. C. Magnets B and C have unlike poles near each other. D. All three magnets have the same pole at one end.
black holes? Gravity Normal Friction Applied What do we call the center of a black hole? Accretion Disc Event Horizon Singularity Black Point What force of physics causes nebulas to turn into stars, and later stars into 1 point 1 point
How was viscosity measured in the "Viscosity" lab? directly with a spring scale directly with a viscosity meter indirectly by measuring the distance a liquid flowed in a given time indirectly by measuring the volume of honey
You're driving down a highway late one night at $20m/s$ when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the breaks is 0.50 s, and the maximum deceleration of your car is $10m/s^{2}$ How much distance is between you and the deer when you come to a stop? 10 m Om 5.0 m 35 m 30 m
Match the items. a. Disturbance moves perpendicular to the direction of the wave b. Ocean Wave c. Sound d. Light e. Disturbance moves in the same direction as the wave 1. Surface Wave 2. Mechanical Wave 3. Electromagnetic Wave 4. Longitudinal Wave 5. Transverse Wave
