Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A hotel elevator ascends 130 m with a maximum speed of 5.8 m/s. Its acceleration and deceleration both have a magnitude of 1.5 m/s2.
27 g of copper pellets are removed from a 300 degree Celsius oven and immediately dropped into 110 mL of water at 25 degree Celsius in an insulated cup. What will the new water temperature be?
A proton moves at 4.5×10^6 m/s horizontally at a right angle to a magnetic field. What is the strength of the magnetic field required to exactly balance the weight of the proton and keep it mo
A commuter train travels between two downtown stations. Because the stations are only 1.38 km apart, the train never reaches its maximum possible cruising speed.
Bonnie and Clyde are sliding a 315 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 379 of force while Bonnie pulls forward on
A train moving with constant velocity travels 180 north in 14 and an undetermined distance to the west. The speed of the train is 35. Find the direction of the train's motion relative to north.
A canoeist paddles upstream at 2m/s and then turns around and floats downstream at 4m/s. The turn-around time is 8s. a: What is the average velocity of the canoe?
A small object with a mass of 330 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 2.00 cm. If the
Two joggers run at a constant velocity of 7.5 m/s toward the east. At time t=0, one is 15m east of the origin and te other is 15m west. a: what would be the differences in the position-time graphs o
A golf ball is struck with a five iron on level ground. It lands 92.4 away 4.20 later. What was (a) the direction and (b) the magnitude of the initial velocity
Assume that the soil has an average water content of 2.5 kg/kg and a bulk density of 1500 kg/m3. Estimate the approximate position of both peaks 30 years after they were spilled. Estimate the expect
To determine if the ball clears the cross- bar, what is its height with respect to the crossbar when it reaches the plane of the crossbar?
A student who weighs 470 N is wearing a backpack that weighs 88 N. The student is standing still on level ground. What is the magnitude of the net force on the student?
A handball of mass 0.10 kg, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19 m/s. What is the change in the momentum of the ball?
A stone is dropped from ayala bridge, if hte sound of the splash reaches the deck 3 seconds late. how high is the deck above water?assume that the sound travel is 342m/s
A cannon tilted upward at 24° fires a cannonball with a speed of 110 m/s. What is the component of the cannonball's velocity parallel to the ground?
how much force F_biceps must the biceps exert to hold a 650 g ball at the end of the forearm at distance d_ball = 33.0 cm from the elbow, with the forearm parallel to the floor? How much force F_elb
A carpenter places a board weighing 30 lb on the edge of the roof 24 ft above the ground. How much potential energy does the board have in relation to the ground?
the electric field on the surface of an irregular shaped conductor varies from 78.0 kN/C to 16. kN/C. calculate the local surface charge density at the point on the surface where the radius of curv
Assuming a surface temperature of 3.75°C, find the temperature (in Celsius) at a depth of 35.0 km (near the base of the crust). Ignore the heat generated by the presence of radioactive elements.
A tire placed on a balancing machine in a service station starts from rest and turns through 2.21 rev in 1.64 s before reaching its ?nal angular speed.
On an airless moon, you drop a golf ball of mass 106 g out of a skyscraper window. After it has fallen 125 meters, it is moving at 19.0 m/s. What is the rate of free fall acceleration on this moon?
A cylindrical glass of water (H2O) has a radius of 4.43 cm and a height of 12.5 cm. The density of water is 1.00 g/cm3. How many moles of water molecules are contained in the glass?
Three charges, q1, q2, and q3, are located at the corners of an equilateral triangle with side length of 1.55 m. Find the work done in each of the following cases:
A cart carrying a vertical missile launcher moves horizontally at a constant velocity of 30.0 to the right. It launches a rocket vertically upward. The missile has an initial vertical velocity of 4