subject
Physics, 19.08.2021 14:00 jwdblue

Since January 2021, in half a year, the United States has passed a relatively stable period of easing of the epidemic. But the good times didn't last long. Starting in July, the epidemic in the United States has made a comeback. In just 6 weeks so far, areas with high-risk levels of community transmission have changed from being "scattered everywhere" to almost "the United States has fallen," and the US epidemic map is red. On August 12, the number of new confirmed cases of new coronary pneumonia in a single day reported by the United States to the CDC reached 146,949, which once again refreshed the extreme value of a new round of single-day confirmed cases since the peak of the epidemic in January. After this day, the number of new confirmed cases in a single day began to decline, and as of August 15, there were 41,302 new cases in a single day. On August 16, the number of new cases rebounded to 113,993.
The most critical situation in this round of the epidemic is undoubtedly the southern states. According to the 7-day case rate per 100,000 people, the data of Louisiana, Florida and Mississippi in the southern United States top the list, which is shocking.#Poor epidemic prevention and control in the United States
#

ansver
Answers: 1

Other questions on the subject: Physics

image
Physics, 21.06.2019 18:20, aROSSconpollo
Which is not a step in the rock cycle?
Answers: 1
image
Physics, 21.06.2019 22:10, edjiejwi
Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.
Answers: 3
image
Physics, 21.06.2019 23:00, desiwill01
We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canary’s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg. k and density of air is 1.16 kg/m3 . assume the canary’s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.
Answers: 2
image
Physics, 22.06.2019 03:00, janeou17xn
Which process is represented by the pv diagram? a. the isobaric process b. the isovolumetric process c. the isothermal process d. the adiabatic process
Answers: 1
You know the right answer?
Since January 2021, in half a year, the United States has passed a relatively stable period of easin...

Questions in other subjects:

Konu
Mathematics, 21.02.2022 14:50
Konu
Mathematics, 21.02.2022 14:50
Konu
Computers and Technology, 21.02.2022 14:50