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A child's mass is 30 kg, she pulls a 15 kg- wagon with a horizontal handle whose mass is 1.9 kg , accelerating the wagon and handle at 2.5 m/s^2 . What is the magnitude of the other horizontal forces acting on the child, besides the tension in the handle? Assume the child moves along with the wagon.
A 1200 kg car pushes a 2200 kg truck that has a dead battery . When the driver stes on he accelerator, What is the magnitude of the force of the car on the truck
A 5.00 g bullet moving at 624 m/s strikes a 720g wooden block at rest on a frictionless surface. What is the resulting speed of the block
Water flows at 0.20L/s through a 12-m-long garden hose 2.0cm in diameter that is lying flat on the ground
A bottle has a mass of 35.00 g when empty and 98.40 g when filled with water. What is the specific gravity of this other fluid
visible light has a wavelength of approx 0.5 um. What is its frequency in Hz. EM radiation has a frequency of approx 3GHz, what is its wavelength in centimeters.
Describe Erikson, Levinson, cognitive developmental theorists, Kohlberg, behavioral theorists, Bronfenbrenner, Holland, the eclectic theory, and composite theory.
The field has a magnitude of 0.5 T and is oriented in the +z direction. The particle is deflected in the -y direction and traces out of a fragment of a circle of radius 0.1m. what is the charge to mass ratio
A uniform magnetic field is decreasing at a rate of 0.23T/s. What is the magnitude of the induced electric field at a distance of 3.0 cm from the center of the magnetic field
A typical adult human lung is about 2.05 liters and is made up of large numbers of small spherical cavities called alveoli. how many avioli are there in the lung
What initial launch speed is required to allow a projectile to have a range of 300 m if it is launched at an angle of A) 30 above the horizontal B) 45 above the horizontal .C) 60 above the horizontal.
The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s. How much time does blood take to reach its final velocity?
a 4-cylinder gasoline engine has an efficiency of 28 and delivers 290j of work per cycle per cylinder. when the engine
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