Person stands 30 feet from point P and watches balloon rise vertically Irom the point as shown in the figure above; The balloon is rising at constant rale of feet per second, What is the rate of change; in radians per second, of angle = at the instant when the balloon 40 feet above point P? It gets very complicated. C requested that they let him rest by the fire and promised to pay them some money in the morning. A person carrying a cup of water with floating ice steps into an elevator. The halves contain equal amounts of the gas. However, astronauts can find their mass (inertia) using the fact that the period of oscillations of a spring-mass system depends on the mass attached to it and not on the gravity. Which half, if any, contains a greater amount of gas? However, that is not the way average speed is defined! Some students may jump to the answer of 100, 000 kg, thinking the model will weigh 1/100 of the actual tower. Students may think that since the projectiles travel different distances along their trajectories they have different travel times. From the top of the Eiffel Tower, a jogger is spotted heading toward the tower. A person stands 30 feet from point p and 4. The answer turns out to be 48 mph, independent of x.
A boat travels at 20 kph due east for one and one-half hours from point P to point A. The length of the lower segment is greater than the total length of the two upper segments. A machine designed by NASA on this principle is called a Body Mass Measuring Device (BMMD).
You are allowed to turn the three switches on and off as you like. The normal force gives people a feeling of their weight. While fighting a forest fire, several firemen are trapped behind the burn line of the fire. Answer: (A) Increase. Which beaker, if either, weighs more? Answer: The height of the pole is 26 ft. Step-by-step explanation: Please refer to the attached diagram for details. A person stands 30 feet from point p and 2. The two halves contain the same gas but at different temperatures. Answer: The water drop P is initially in uniform circular motion. The graphs for the two trips will intersect for only one value of x. Thermal Physics: 22-24.
A drop of water at a point P on its surface detaches and flies off. From point A, the angle of elevation of the top of the tree is 52º, and from point B the angle of elevation of the top of the tree is 48º. A metal rod AB is bent into the shape shown. B) Using the answer from part a, find the vertical distance (height) of the road, BC, to the nearest hundredth of a mile. Answer: (B) TP > TQ. Answer: Pair-production is the creation of an electron-positron pair by a gamma ray photon. Here students might think that direction of the initial velocity may affect the speed of impact on the ground. And is not considered "fair use" for educators. A person stands 30 feet from point p line. A) If the horizontal distance of this section of the road is 327 miles, what is the angle of elevation of the road to the nearest hundredth of a degree? 5º from the ship down to the surface. An insect is climbing up a 30 ft. vertical wall. Ix does not waste any time while turning around.
Hence it weighs more. A came back with 5 logs of wood, B brought 3 logs, but C came back empty-handed. Height of pole = 26 ft. What is the width of the ground covered by the spotlight, to the nearest foot. Mr. Fiz is returning home at a speed of 2 mph with his dog Ix. The wavelength in the second medium is not affected by the introduction of a third medium between the two mediums. The straight sections ending in A and B do expand and cause the points A and B to come closer. The height of the pole is approximately 21 ft. When the ball hits the ground, it has lost the same amount of gravitational potential energy and hence gained the same amount of kinetic energy.
Therefore, the dog has been running for 1½ h. With the speed of 3 mph, the dog has traveled a distance of (3 mph) x (1½ h) = 4. However, we remember that the eye of the observer is 5 ft away from the ground. It then travels due north, at the same speed, for three and one-half hours to point B. a) If the boat had originally traveled directly from point P to point B, what would be the distance traveled, to the nearest kilometer? In this process, the photon disappears and its energy is converted into the rest mass of the electron-positron pair and the kinetic energy they carry. In the beaker B, the displaced volume of water has been replaced by the wooden block of lesser density. Light toward the blue end of the visible spectrum is scattered to a much greater extent by the atmosphere. Alex is standing in the hay loft doorway of the barn looking at a nearby tree. There is no change in the magnetic flux through the loop as the truck moves along a straight line. A boat in a lake drops an anchor into the lake. Distance and Displacement: 4-6. Two identical beakers hold water at the same height, but one of them has a completely immersed iron block suspended in it by a string. A ball is launched from the same height repeatedly with the same speed Vo but in different directions A, B, and C as shown below.