A bucket of mass 1.90 kg is whirled in a vertical circle of radius 1.30 m. At the lowest point of its motion the tension in the rope supporting the bucket is 22.0 N.
A student (m = 73 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 s. The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. From what height did the...
A 2.2-kg object is suspended from a spring with k = 18 N/m. The mass is pulled 0.35 m downward from its equilibrium position and allowed to oscillate. What is the maximum kinetic energy of the object?
A simple pendulum uses a steel wire as the string. The length of this wire is 4.02 m at room temperature. If the temperature of the pendulum increases by 25oC, what is the change in the period of the pendulum?
a baseball is thrown at an angle of 25 degrees relative to the ground at a speed of 23.0 m/s. If the ball was caught 42.0 m from the thrower,, how long was it in the air? How high was the tallest spot in the ball's path?
in a lab you submurge 100 g of 40 degree centigrade nails in 100 g of 20 degree centigrade water. tHE SPECIFIC HEAT OF IRON IS0.12 cal/g times degree centigrade. Equate the heat gained by the water to the heat lost by the nails and show that the final temperature of the water becomes 22.1...
An unknown volume of laughing gas has a temperature of 325 K and a pressure of 0.5 kPa. The temperature is decreased to 320 K, the pressure is increased to 1.2 kPa, and the final volume of the gas is 48.0 L. What was the initial volume of the laughing gas?
Please take a look at this question it has four parts. Thanks
Block A in the figure weighs 1.90 and block weighs 3.70. The coefficient of kinetic friction between all surfaces is 0.300.
Please answer this three part question Thanks
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1. Can you show me step by step how to solve this problem?:
- The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
- (a) What is the average angular acceleration of the Earth?
- (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?
- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas